Study to Validate the Questionnaire Called IDSIQ™ in Patients With Insomnia Disorder

Study Overview
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Brief Summary
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The main study objective is to assess the content validity and the psychometric characteristics of the Insomnia Daytime Symptoms and Impacts Questionnaire™ (IDSIQ™).

Detailed Description
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Zolpidem will be used as an active intervention to assess the sensitivity to change of IDSIQ™ in patients suffering from insomnia disorder. IDSIQ™ will be administered during the screening period (within 14 days before enrollment in the study) and the treatment period (from Day 1 to Day 14). End of study (phone call) will take place 30-37 days after the end-of-treatment.

Official Title
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Multi-center, Single-arm, Open-label Study in Patients With Insomnia Disorder to Validate the Insomnia Daytime Symptoms and Impacts Questionnaire™ (IDSIQ™)

Conditions
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Insomnia Disorder

Intervention / Treatment
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* Drug: Zolpidem


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Signed informed consent prior to any study-mandated procedure; Male or female aged ≥ 18 years; Body mass index (BMI): 18.5 ≤ BMI (kg/m2) < 32.0; Insomnia disorder according to DSM-5 criteria; Insufficient sleep quantity evaluated according to the self-reported history and data collected in the sleep diary; Insomnia Severity Index score greater than or equal to 15; Complete the IDSIQ™ and the sleep diary questionnaire as required. Exclusion Criteria: Any current history of sleep disorder other than insomnia, or any lifetime history of related breathing disorder, periodic limb movement disorder, restless legs syndrome, circadian rhythm disorder, rapid eye movement behavior disorder, or narcolepsy; Self-reported usual daytime napping ≥ 1 hour per day, and ≥ 3 days per week; Caffeine consumption ≥ 600 mg per day; Shift work within 2 weeks prior to the screening visit, or planned shift work from V1 to V3; Travel ≥ 3 time zones within 1 week prior to the screening visit, or planned travel ≥ 3 time zones from V1 to V3; Known severe renal impairment or know moderate or severe hepatic impairment; History or clinical evidence of any disease or medical condition or treatment, which may put the subject at risk of participation in the study or may interfere with the study assessments; Any circumstances or conditions, which, in the opinion of the investigator, may affect the subject's full participation in the study or compliance with the protocol.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Zolpidem<br>Commercially available zolpidem (5 or 10 mg) will be administered orally once daily during the treatment period (Day 1 to Day 14) following prescribing information from each country participating in this study | Drug: Zolpidem<br>* Commercially available tablets of zolpidem (5 or 10 mg) for oral use<br>* Other names: Stilnox;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Content validity of the IDSIQ™: scoring of items into domains | Content validity will be based on the combination of qualitative and statistical methods in order to generate a scoring algorithm | During the screening period, i.e. within 14 days before Day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Psychometric validitiy of the IDSIQ™: Internal reliability | Internal consistency reliability assesses the extent to which the items correlate which each other within their domain and it is evaluated by correlation scores | During the screening period, i.e. within 14 days before Day 1 | 
| Psychometric validitiy of the IDSIQ™: Test-retest reliability | Test-retest reliability assesses the reproducibility of the domain scores during a specific time period of stable condition and it is evaluated by intraclass correlation coefficients | During the screening period, i.e. within 14 days before Day 1 | 
| Psychometric validitiy of the IDSIQ™: sensitivity to change | Changes in the IDSIQ domain scores after 2 weeks of treatment with zolpidem compared to baseline (before zolpidem administration) | At Week 1 and Week 2 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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insomnia