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    Clinical Trial Results:
    Effect of granisetron on facial skin sensitivity in healthy volunteers

    Summary
    EudraCT number
    2013-000026-57
    Trial protocol
    SE  
    Global end of trial date
    01 Nov 2018

    Results information
    Results version number
    v1(current)
    This version publication date
    04 Apr 2021
    First version publication date
    04 Apr 2021
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    Gra-sensv1
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    -
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Karolinska Institutet
    Sponsor organisation address
    17177, Stockholm, Sweden,
    Public contact
    Department of Dental medicine Malin Ernberg, Karolinska Institutet, 46 852488236, malin.ernberg@ki.se
    Scientific contact
    Department of Dental medicine Malin Ernberg, Karolinska Institutet, 46 852488236, malin.ernberg@ki.se
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    No
    Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    01 Nov 2018
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    01 Nov 2018
    Global end of trial reached?
    Yes
    Global end of trial date
    01 Nov 2018
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To investigate the effect of granisetron on facial skin sensitivity. To clairify, this is a cross-over study with 3 arms, where the same 18 participants have been included in all 3 arms. This system is not made for the reporting of cross-over studies, therefore workarounds have been made in order to report the results as accurately as possible. Therefore, in the statistics section it looks like there are 36 participants included in each analysis, but the correct should be 18.
    Protection of trial subjects
    The study was reviewed and approved by Regional Ethical Review Board in Stockholm, Sweden (Dnr 2013/932-31/4) Swedish Medical Products Agency (EudoraCT-number 2008-000746-32). The patients/participants provided their written informed consent to participate in this study.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    03 Mar 2014
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    No
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Sweden: 18
    Worldwide total number of subjects
    18
    EEA total number of subjects
    18
    Number of subjects enrolled per age group
    In utero
    0
    Preterm newborn - gestational age < 37 wk
    0
    Newborns (0-27 days)
    0
    Infants and toddlers (28 days-23 months)
    0
    Children (2-11 years)
    0
    Adolescents (12-17 years)
    0
    Adults (18-64 years)
    18
    From 65 to 84 years
    0
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    The study was conducted at the Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden. Participants were recruited between March 2014 and November 2018. They were recruited by flyers posted at the Department of Dental Medicine, Karolinska Institutet, and at the library of Södertörn University, both in Huddinge, Sweden.

    Pre-assignment
    Screening details
    Inclusion criteria were: (a) age between 18 and 40 years, (b) good general health, and (c) male sex.

    Period 1
    Period 1 title
    Overall trial (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator
    Blinding implementation details
    Randomization and distribution of injections were done by one of the researchers not participating in the data collection.

    Arms
    Are arms mutually exclusive
    No

    Arm title
    Baseline Granisetron (test-substance)
    Arm description
    Test was done at baseline before 1ml of granisetron was injected into the skin over the masseter muscle.
    Arm type
    Experimental

    Investigational medicinal product name
    Granisetron
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of granisetron was injected into the skin over the masseter muscle.

    Arm title
    Baseline Lidocaine (positive control)
    Arm description
    Test was done at baseline before 1ml of Lidocaine was injected into the skin over the masseter muscle.
    Arm type
    Active comparator

    Investigational medicinal product name
    Lidocaine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of lidocaine was injected into the skin over the masseter muscle.

    Arm title
    Baseline Isotonic saline (placebo)
    Arm description
    Test was done at baseline before 1ml of isotonic saline was injected into the skin over the masseter muscle.
    Arm type
    Placebo

    Investigational medicinal product name
    Isotonic saline
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of sotonic saline was injected into the skin over the masseter muscle.

    Arm title
    5min Granisetron (test-substance)
    Arm description
    Test was done at 5 min after 1ml of granisetron was injected into the skin over the masseter muscle.
    Arm type
    Experimental

    Investigational medicinal product name
    Granisetron
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of granisetron was injected into the skin over the masseter muscle.

    Arm title
    5min Lidocaine (positive control)
    Arm description
    Test was done at min 5 after 1ml of Lidocaine was injected into the skin over the masseter muscle.
    Arm type
    Active comparator

    Investigational medicinal product name
    Lidocaine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of lidocaine was injected into the skin over the masseter muscle.

    Arm title
    5min Isotonic saline (placebo)
    Arm description
    Test was done at min 5 after 1ml of isotonic saline was injected into the skin over the masseter muscle.
    Arm type
    Placebo

    Investigational medicinal product name
    Isotonic saline
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of sotonic saline was injected into the skin over the masseter muscle.

    Arm title
    20min Granisetron (test-substance)
    Arm description
    Test was done at 20 min after 1ml of granisetron was injected into the skin over the masseter muscle.
    Arm type
    Experimental

    Investigational medicinal product name
    Granisetron
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of granisetron was injected into the skin over the masseter muscle.

    Arm title
    20min Lidocaine (positive control)
    Arm description
    Test was done at min 20 after 1ml of Lidocaine was injected into the skin over the masseter muscle.
    Arm type
    Active comparator

    Investigational medicinal product name
    Lidocaine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of lidocaine was injected into the skin over the masseter muscle.

    Arm title
    20min Isotonic saline (placebo)
    Arm description
    Test was done at 20 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.
    Arm type
    Placebo

    Investigational medicinal product name
    Isotonic saline
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of sotonic saline was injected into the skin over the masseter muscle.

    Arm title
    40min Granisetron (test-substance)
    Arm description
    Test was done at 40 min after 1ml of granisetron was injected into the skin over the masseter muscle.
    Arm type
    Experimental

    Investigational medicinal product name
    Granisetron
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of granisetron was injected into the skin over the masseter muscle.

    Arm title
    40min Lidocaine (positive control)
    Arm description
    Test was done at 40 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.
    Arm type
    Active comparator

    Investigational medicinal product name
    Lidocaine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of lidocaine was injected into the skin over the masseter muscle.

    Arm title
    40min Isotonic saline (placebo)
    Arm description
    Test was done at 40 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.
    Arm type
    Placebo

    Investigational medicinal product name
    Isotonic saline
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of sotonic saline was injected into the skin over the masseter muscle.

    Arm title
    60min Granisetron (test-substance)
    Arm description
    Test was done at 60 min after 1ml of granisetron was injected into the skin over the masseter muscle.
    Arm type
    Experimental

    Investigational medicinal product name
    Granisetron
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of granisetron was injected into the skin over the masseter muscle.

    Arm title
    60min Lidocaine (positive control)
    Arm description
    Test was done at 60 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.
    Arm type
    Active comparator

    Investigational medicinal product name
    Lidocaine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of lidocaine was injected into the skin over the masseter muscle.

    Arm title
    60min Isotonic saline (placebo)
    Arm description
    Test was done at 60 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.
    Arm type
    Placebo

    Investigational medicinal product name
    Isotonic saline
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    1ml of sotonic saline was injected into the skin over the masseter muscle.

    Number of subjects in period 1
    Baseline Granisetron (test-substance) Baseline Lidocaine (positive control) Baseline Isotonic saline (placebo) 5min Granisetron (test-substance) 5min Lidocaine (positive control) 5min Isotonic saline (placebo) 20min Granisetron (test-substance) 20min Lidocaine (positive control) 20min Isotonic saline (placebo) 40min Granisetron (test-substance) 40min Lidocaine (positive control) 40min Isotonic saline (placebo) 60min Granisetron (test-substance) 60min Lidocaine (positive control) 60min Isotonic saline (placebo)
    Started
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    Completed
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18
    18

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Baseline Granisetron (test-substance)
    Reporting group description
    Test was done at baseline before 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    Baseline Lidocaine (positive control)
    Reporting group description
    Test was done at baseline before 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    Baseline Isotonic saline (placebo)
    Reporting group description
    Test was done at baseline before 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    5min Granisetron (test-substance)
    Reporting group description
    Test was done at 5 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    5min Lidocaine (positive control)
    Reporting group description
    Test was done at min 5 after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    5min Isotonic saline (placebo)
    Reporting group description
    Test was done at min 5 after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    20min Granisetron (test-substance)
    Reporting group description
    Test was done at 20 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    20min Lidocaine (positive control)
    Reporting group description
    Test was done at min 20 after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    20min Isotonic saline (placebo)
    Reporting group description
    Test was done at 20 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    40min Granisetron (test-substance)
    Reporting group description
    Test was done at 40 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    40min Lidocaine (positive control)
    Reporting group description
    Test was done at 40 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    40min Isotonic saline (placebo)
    Reporting group description
    Test was done at 40 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    60min Granisetron (test-substance)
    Reporting group description
    Test was done at 60 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    60min Lidocaine (positive control)
    Reporting group description
    Test was done at 60 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    60min Isotonic saline (placebo)
    Reporting group description
    Test was done at 60 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group values
    Baseline Granisetron (test-substance) Baseline Lidocaine (positive control) Baseline Isotonic saline (placebo) 5min Granisetron (test-substance) 5min Lidocaine (positive control) 5min Isotonic saline (placebo) 20min Granisetron (test-substance) 20min Lidocaine (positive control) 20min Isotonic saline (placebo) 40min Granisetron (test-substance) 40min Lidocaine (positive control) 40min Isotonic saline (placebo) 60min Granisetron (test-substance) 60min Lidocaine (positive control) 60min Isotonic saline (placebo) Total
    Number of subjects
    18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18
    Age categorical
    Units: Subjects
        In utero
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Preterm newborn infants (gestational age < 37 wks)
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Newborns (0-27 days)
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Infants and toddlers (28 days-23 months)
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Children (2-11 years)
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Adolescents (12-17 years)
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Adults (18-64 years)
    18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18
        From 65-84 years
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        85 years and over
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    Gender categorical
    Units: Subjects
        Female
    0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
        Male
    18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18

    End points

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    End points reporting groups
    Reporting group title
    Baseline Granisetron (test-substance)
    Reporting group description
    Test was done at baseline before 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    Baseline Lidocaine (positive control)
    Reporting group description
    Test was done at baseline before 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    Baseline Isotonic saline (placebo)
    Reporting group description
    Test was done at baseline before 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    5min Granisetron (test-substance)
    Reporting group description
    Test was done at 5 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    5min Lidocaine (positive control)
    Reporting group description
    Test was done at min 5 after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    5min Isotonic saline (placebo)
    Reporting group description
    Test was done at min 5 after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    20min Granisetron (test-substance)
    Reporting group description
    Test was done at 20 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    20min Lidocaine (positive control)
    Reporting group description
    Test was done at min 20 after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    20min Isotonic saline (placebo)
    Reporting group description
    Test was done at 20 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    40min Granisetron (test-substance)
    Reporting group description
    Test was done at 40 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    40min Lidocaine (positive control)
    Reporting group description
    Test was done at 40 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    40min Isotonic saline (placebo)
    Reporting group description
    Test was done at 40 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Reporting group title
    60min Granisetron (test-substance)
    Reporting group description
    Test was done at 60 min after 1ml of granisetron was injected into the skin over the masseter muscle.

    Reporting group title
    60min Lidocaine (positive control)
    Reporting group description
    Test was done at 60 min after 1ml of Lidocaine was injected into the skin over the masseter muscle.

    Reporting group title
    60min Isotonic saline (placebo)
    Reporting group description
    Test was done at 60 min after 1ml of isotonic saline was injected into the skin over the masseter muscle.

    Primary: Mechanical Detection Threshold Granisetron

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    End point title
    Mechanical Detection Threshold Granisetron [1]
    End point description
    The MDT was assessed using calibrated von Frey nylon monofilaments (Anesthesiometer, Somedic Sales AB, Hörby, Sweden) exerting bending forces ranging from 0.026 to 110 g according to the stepwise ascending– descending method in order to find the lowest detectable bending force.
    End point type
    Primary
    End point timeframe
    Mechanical detection threshold was assessed at baseline (before injection) and 5, 20, 40 and 60 min after injection of Granisetron.
    Notes
    [1] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    4.156 ( 1.432 )
    6.206 ( 2.306 )
    5.856 ( 1.986 )
    6.172 ( 2.115 )
    5.639 ( 2.012 )
    Statistical analysis title
    Difference in MDT Granisetron Baseline-5min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 5 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 5min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [2]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [2] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Granisetron Baseline-20min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 20 min.
    Comparison groups
    20min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [3]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [3] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Granisetron Baseline-40min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 40 min.
    Comparison groups
    40min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [4]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [4] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Granisetron Baseline-60min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 60 min.
    Comparison groups
    60min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [5]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [5] - Changes of MDT across times were analyzed using Friedman ANOVA.

    Primary: Mechanical Detection Threshold Lidocaine

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    End point title
    Mechanical Detection Threshold Lidocaine [6]
    End point description
    The MDT was assessed using calibrated von Frey nylon monofilaments (Anesthesiometer, Somedic Sales AB, Hörby, Sweden) exerting bending forces ranging from 0.026 to 110 g according to the stepwise ascending– descending method in order to find the lowest detectable bending force.
    End point type
    Primary
    End point timeframe
    Mechanical Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [6] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    4.228 ( 1.150 )
    9.628 ( 2.417 )
    6.950 ( 2.630 )
    6.300 ( 2.552 )
    5.978 ( 2.437 )
    Statistical analysis title
    Difference in MDT Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 5 min.
    Comparison groups
    5min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [7]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [7] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 20 min.
    Comparison groups
    20min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [8]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [8] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 5 min.
    Comparison groups
    40min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [9]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [9] - Changes of CDT, HDT, and MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 60 min.
    Comparison groups
    60min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [10]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [10] - Changes of CDT, HDT, and MDT across times were analyzed using Friedman ANOVA.

    Primary: Mechanical Detection Threshold Placebo

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    End point title
    Mechanical Detection Threshold Placebo [11]
    End point description
    The MDT was assessed using calibrated von Frey nylon monofilaments (Anesthesiometer, Somedic Sales AB, Hörby, Sweden) exerting bending forces ranging from 0.026 to 110 g according to the stepwise ascending– descending method in order to find the lowest detectable bending force.
    End point type
    Primary
    End point timeframe
    Mechanical Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Isotonic Saline.
    Notes
    [11] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    4.222 ( 1.123 )
    5.367 ( 1.625 )
    5.717 ( 1.860 )
    5.411 ( 1.592 )
    5.267 ( 1.649 )
    Statistical analysis title
    Difference in MDT Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 5 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 5min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [12]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [12] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Isotonic Saline Baseline-20min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 20 min.
    Comparison groups
    20min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [13]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [13] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 40 min.
    Comparison groups
    40min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [14]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [14] - Changes of MDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in MDT Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Mechanical Detection Threshold from Baseline to 60 min
    Comparison groups
    60min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [15]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [15] - Changes of MDT across times were analyzed using Friedman ANOVA.

    Primary: Mechanical Pain Sensitivity Granisetron

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    End point title
    Mechanical Pain Sensitivity Granisetron [16]
    End point description
    In order to assess MPS, the von Frey nylon monofilament 19 with a force of 110 g was used.
    End point type
    Primary
    End point timeframe
    Mechanical Pain Sensitivity was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Granisetron.
    Notes
    [16] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    39.222 ( 16.275 )
    30.167 ( 16.176 )
    31.556 ( 18.234 )
    34.611 ( 16.832 )
    35.500 ( 18.066 )
    Statistical analysis title
    Difference in MPS Granisetron Baseline-5min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 5 min.
    Comparison groups
    5min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [17]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [17] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Granisetron Baseline-20min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 20 min.
    Comparison groups
    20min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [18]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [18] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Granisetron Baseline-40min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 40 min.
    Comparison groups
    40min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [19]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [19] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Granisetron Baseline-60min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 60 min.
    Comparison groups
    60min Granisetron (test-substance) v Baseline Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval

    Primary: Mechanical Pain Sensitivity Lidocaine

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    End point title
    Mechanical Pain Sensitivity Lidocaine [20]
    End point description
    In order to assess MPS, the von Frey nylon monofilament 19 with a force of 110 g was used.
    End point type
    Primary
    End point timeframe
    Mechanical Pain Sensitivity was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [20] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    38.556 ( 14.468 )
    27.556 ( 19.123 )
    35.994 ( 16.579 )
    39.833 ( 17.130 )
    38.333 ( 15.718 )
    Statistical analysis title
    Difference in MPS Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 5 min.
    Comparison groups
    5min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [21]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [21] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 20 min.
    Comparison groups
    20min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [22]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [22] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 40 min.
    Comparison groups
    40min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [23]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [23] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 60 min.
    Comparison groups
    60min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [24]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [24] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.

    Primary: Mechanical Pain Sensitivity Placebo

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    End point title
    Mechanical Pain Sensitivity Placebo [25]
    End point description
    In order to assess MPS, the von Frey nylon monofilament 19 with a force of 110 g was used.
    End point type
    Primary
    End point timeframe
    Mechanical Pain Sensitivity was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocain.
    Notes
    [25] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    36.111 ( 14.552 )
    28.889 ( 16.743 )
    32.889 ( 14.336 )
    34.389 ( 16.881 )
    37.389 ( 16.624 )
    Statistical analysis title
    Difference in MPS Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 5 min.
    Comparison groups
    5min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [26]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [26] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Isotonic Saline Baseline-20min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 20 min.
    Comparison groups
    20min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [27]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [27] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 40 min.
    Comparison groups
    40min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [28]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [28] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.
    Statistical analysis title
    Difference in MPS Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Mechanical Pain Sensitivity (MPS) from Baseline to 60 min.
    Comparison groups
    60min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [29]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [29] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in MPS.

    Primary: Cold Detection Threshold Granisetron

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    End point title
    Cold Detection Threshold Granisetron [30]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Granisetron.
    Notes
    [30] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    30.021 ( 1.510 )
    29.342 ( 2.293 )
    29.426 ( 1.621 )
    29.513 ( 1.416 )
    29.632 ( 1.455 )
    Statistical analysis title
    Difference in CDT Granisetron Baseline-5min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 5 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 5min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [31]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [31] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Granisetron Baseline-20min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 20 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 20min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [32]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [32] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Granisetron Baseline-40min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 40 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 40min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [33]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [33] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Granisetron Baseline-60min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 60 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 60min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [34]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [34] - Changes of CDT across times were analyzed using Friedman ANOVA.

    Primary: Cold Detection Threshold Lidocaine

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    End point title
    Cold Detection Threshold Lidocaine [35]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [35] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    31.576 ( 1.947 )
    29.103 ( 8.505 )
    29.896 ( 5.399 )
    30.868 ( 5.121 )
    30.567 ( 6.864 )
    Statistical analysis title
    Difference in CDT Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 5 min.
    Comparison groups
    5min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [36]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [36] - Changes of CDT across times were analyzed using Friedman ANOVA
    Statistical analysis title
    Difference in CDT Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 20 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 20min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [37]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [37] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 40 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 40min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [38]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [38] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 60 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 60min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [39]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [39] - Changes of CDT across times were analyzed using Friedman ANOVA.

    Primary: Cold Detection Threshold Isotonic saline

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    End point title
    Cold Detection Threshold Isotonic saline [40]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Isotonic saline.
    Notes
    [40] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    30.177 ( 1.309 )
    28.967 ( 1.979 )
    28.672 ( 2.253 )
    28.773 ( 2.614 )
    28.808 ( 2.548 )
    Statistical analysis title
    Difference in CDT Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 5 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 5min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [41]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [41] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Isotonic Saline Baseline-20min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 20 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 20min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [42]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [42] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 40 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 40min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [43]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [43] - Changes of CDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in CDT Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Cold Detection Threshold (CDT) from Baseline to 60 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 60min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [44]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [44] - Changes of CDT across times were analyzed using Friedman ANOVA.

    Primary: Heat Detection Threshold Granisetron

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    End point title
    Heat Detection Threshold Granisetron [45]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Granisetron.
    Notes
    [45] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    33.967 ( 1.230 )
    35.413 ( 2.707 )
    34.932 ( 1.633 )
    35.319 ( 2.447 )
    35.154 ( 2.513 )
    Statistical analysis title
    Difference in HDT Granisetron Baseline-5min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 5 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 5min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [46]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [46] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Granisetron Baseline-20min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 20 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 20min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [47]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [47] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Granisetron Baseline-40min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 40 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 40min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [48]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [48] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Granisetron Baseline-60min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 60 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 60min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence
    P-value
    < 0.05 [49]
    Method
    ANOVA
    Confidence interval
    Notes
    [49] - Changes of HDT across times were analyzed using Friedman ANOVA.

    Primary: Heat Detection Threshold Lidocaine

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    End point title
    Heat Detection Threshold Lidocaine [50]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [50] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    34.379 ( 1.973 )
    37.723 ( 4.672 )
    37.262 ( 4.101 )
    36.160 ( 3.829 )
    35.885 ( 3.961 )
    Statistical analysis title
    Difference in HDT Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 5 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 5min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [51]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [51] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 20 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 20min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [52]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [52] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 40 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 40min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [53]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [53] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 60 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 60min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [54]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [54] - Changes of HDT across times were analyzed using Friedman ANOVA.

    Primary: Heat Detection Threshold Isotonic saline

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    End point title
    Heat Detection Threshold Isotonic saline [55]
    End point description
    In order to assess the thermal detection threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocain Isotonic saline.
    Notes
    [55] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    34.576 ( 1.617 )
    35.145 ( 1.869 )
    35.518 ( 2.075 )
    35.434 ( 1.978 )
    35.484 ( 1.728 )
    Statistical analysis title
    Difference in HDT Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 5 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 5min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [56]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [56] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Isotonic Saline Baseline20min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 20 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 20min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [57]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [57] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 40 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 40min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [58]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [58] - Changes of HDT across times were analyzed using Friedman ANOVA.
    Statistical analysis title
    Difference in HDT Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Heat Detection Threshold (HDT) from Baseline to 60 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 60min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [59]
    P-value
    < 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [59] - Changes of HDT across times were analyzed using Friedman ANOVA.

    Primary: Cold Pain Threshold Garnisetron

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    End point title
    Cold Pain Threshold Garnisetron [60]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Pain Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Granisetron.
    Notes
    [60] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    18.641 ( 7.776 )
    17.151 ( 9.681 )
    16.521 ( 8.839 )
    18.422 ( 7.783 )
    16.708 ( 7.869 )
    Statistical analysis title
    Difference in CPT Granisetron Baseline-5min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 5 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 5min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [61]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [61] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Granisetron Baseline-20min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 20 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 20min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [62]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [62] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Granisetron Baseline-40min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 40 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 40min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [63]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [63] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Granisetron Baseline-60min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 60 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 60min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [64]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [64] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.

    Primary: Cold Pain Threshold Lidocaine

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    End point title
    Cold Pain Threshold Lidocaine [65]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Pain Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [65] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    15.582 ( 9.676 )
    11.533 ( 10.075 )
    13.910 ( 8.743 )
    15.953 ( 9.560 )
    15.063 ( 9.501 )
    Statistical analysis title
    Difference in CPT Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 5 min.
    Comparison groups
    5min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [66]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [66] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 20 min.
    Comparison groups
    20min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [67]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [67] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 40 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 40min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [68]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [68] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 60 min.
    Comparison groups
    60min Lidocaine (positive control) v Baseline Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [69]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [69] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.

    Primary: Cold Pain Threshold Isotonic Saline

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    End point title
    Cold Pain Threshold Isotonic Saline [70]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Cold Detection Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Isotonic Saline.
    Notes
    [70] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    19.159 ( 9.211 )
    18.714 ( 11.567 )
    18.203 ( 10.356 )
    16.877 ( 11.491 )
    18.029 ( 11.239 )
    Statistical analysis title
    Difference in CPT Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 5 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 5min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [71]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [71] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Isotonic Saline Baseline-20min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 20 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 20min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [72]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [72] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 40 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 40min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [73]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [73] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.
    Statistical analysis title
    Difference in CPT Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Cold Pain Threshold (CPT) from Baseline to 60 min.
    Comparison groups
    60min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [74]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [74] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in CPT.

    Primary: Heat Pain Threshold Granisetron

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    End point title
    Heat Pain Threshold Granisetron [75]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Pain Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Granisetron.
    Notes
    [75] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Granisetron (test-substance) 5min Granisetron (test-substance) 20min Granisetron (test-substance) 40min Granisetron (test-substance) 60min Granisetron (test-substance)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    43.617 ( 4.670 )
    44.746 ( 3.826 )
    45.190 ( 3.415 )
    44.766 ( 3.694 )
    44.905 ( 3.776 )
    Statistical analysis title
    Difference in HPT Granisetron Baseline-5min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 5 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 5min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [76]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [76] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Granisetron Baseline-20min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 20 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 20min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [77]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [77] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Granisetron Baseline-40min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 40 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 40min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [78]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [78] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Granisetron Baseline-60min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 60 min.
    Comparison groups
    Baseline Granisetron (test-substance) v 60min Granisetron (test-substance)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [79]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [79] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.

    Primary: Heat Pain Threshold Lidocaine

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    End point title
    Heat Pain Threshold Lidocaine [80]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Pain Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [80] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Lidocaine (positive control) 5min Lidocaine (positive control) 20min Lidocaine (positive control) 40min Lidocaine (positive control) 60min Lidocaine (positive control)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    43.555 ( 3.814 )
    45.378 ( 3.283 )
    45.197 ( 2.972 )
    44.187 ( 4.176 )
    42.361 ( 9.086 )
    Statistical analysis title
    Difference in HPT Lidocaine Baseline-5min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 5 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 5min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [81]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [81] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Lidocaine Baseline-20min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 20 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 20min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [82]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [82] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Lidocaine Baseline-40min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 40 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 40min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [83]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [83] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Lidocaine Baseline-60min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 60 min.
    Comparison groups
    Baseline Lidocaine (positive control) v 60min Lidocaine (positive control)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [84]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [84] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.

    Primary: Heat Pain Threshold Isotonic Saline

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    End point title
    Heat Pain Threshold Isotonic Saline [85]
    End point description
    In order to assess the pain threshold, an electronic thermo-test system was used (CHEPS thermo-test system, Medoc Ltd. Ramat Yishai, Israel). The measurements were done using an advanced thermal stimulator (ATS) with a contact area of 3 × 3 cm that was placed on the skin surface of the masseter. A preset automatic program was used in which the thermal stimulator had a baseline temperature of 32◦C (skin temperature) and a minimum and maximum temperature of 0◦ and 55◦C.
    End point type
    Primary
    End point timeframe
    Heat Pain Threshold was assessed at baseline (before injection) and 5, 20, 40, 60min after injection of Lidocaine.
    Notes
    [85] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period.
    Justification: This is a cross-over study, but this system cannot accommodate this. Therefore, in order to report the results, we have tried to used workarounds, which means there are only total 3 arms, but in order to report the result as accurately as possible, we have created one arm for each variable. That is why not all arms have been used for each end point.
    End point values
    Baseline Isotonic saline (placebo) 5min Isotonic saline (placebo) 20min Isotonic saline (placebo) 40min Isotonic saline (placebo) 60min Isotonic saline (placebo)
    Number of subjects analysed
    18
    18
    18
    18
    18
    Units: Score
        arithmetic mean (standard deviation)
    42.580 ( 4.770 )
    42.801 ( 4.710 )
    43.268 ( 4.910 )
    43.262 ( 4.897 )
    42.931 ( 4.757 )
    Statistical analysis title
    Difference in HPT Isotonic Saline Baseline-5min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 5 min.
    Comparison groups
    5min Isotonic saline (placebo) v Baseline Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [86]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [86] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Isotonic Saline Baseline-20min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 20 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 20min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [87]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [87] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Isotonic Saline Baseline-40min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 40 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 40min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [88]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [88] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.
    Statistical analysis title
    Difference in HPT Isotonic Saline Baseline-60min
    Statistical analysis description
    Difference in Heat Pain Threshold (HPT) from Baseline to 60 min.
    Comparison groups
    Baseline Isotonic saline (placebo) v 60min Isotonic saline (placebo)
    Number of subjects included in analysis
    36
    Analysis specification
    Pre-specified
    Analysis type
    equivalence [89]
    P-value
    > 0.05
    Method
    ANOVA
    Confidence interval
    Notes
    [89] - Two-way ANOVA for repeated measures (RM ANOVA) with time as factor analyzed group differences in HPT.

    Adverse events

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    Adverse events information [1]
    Timeframe for reporting adverse events
    Baseline up to 60 min after injection.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    n/a
    Dictionary version
    n/a
    Frequency threshold for reporting non-serious adverse events: 0%
    Notes
    [1] - There are no non-serious adverse events recorded for these results. It is expected that there will be at least one non-serious adverse event reported.
    Justification: There were no non-serious adverse events, which we also did not have before when we injected granisetron intramuscularly. The adverse events that exist for granisetron i FASS (mosty constipation and headache) mainly applies to systemic administration with higher doses and not a relatively low single dose that we used.

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? No

    Interruptions (globally)

    Were there any global interruptions to the trial? No

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    There were two researchers performing the examinations and injections. Some of the participants found it difficult to identify the exact transition from non-painful to painful thermal sensation, especially regarding CPT.

    Online references

    http://www.ncbi.nlm.nih.gov/pubmed/32328025
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