- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT00948155
Measuring Smoking Behaviors While Using Varenicline
Assessment of Smoking Topography and Behaviors During Response to Varenicline
Přehled studie
Detailní popis
Typ studie
Zápis (Aktuální)
Fáze
- Fáze 4
Kontakty a umístění
Studijní místa
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Pennsylvania
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Philadelphia, Pennsylvania, Spojené státy, 19104
- Tobacco Use Research Center
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
Inclusion Criteria:
- self report minimum 10 daily cigarettes
- self report smoking every day past 5 years
- between the ages 21-65
- self report intention to try to quit smoking in the next 6 months
Exclusion Criteria:
- self reported use of any nicotine-containing products other than non-menthol cigarettes
- self reported history or current treatment of substance abuse (other than nicotine dependence)
- self reported alcohol use greater than 25 standard drinks per week;
- currently pregnant, planned pregnancy or lactating (females: negative urine pregnancy screen)
- self reported history or current diagnosis of any Axis 1 disorders except past depression
- self reported serious or unstable disease within past year
- self reported history of epilepsy or seizure disorder;
- self reported history or current diagnosis of COPD (chronic obstructive pulmonary disease), cardiovascular disease, heart attack, or uncontrolled hypertension
- self reported kidney function impairment
- any current or recent (30 day) use of: smoking cessation medications, anti-psychotics, anti-depressants, anti-anxiety, panic medications, stimulants or opiate-containing medications
- less than 5 years of daily smoking
- any medical condition or concomitant medication that could compromise participant safety or treatment
- provide a baseline carbon monoxide (CO) reading < 10 ppm
- self reported use of non filtered cigarettes
- inability to provide informed consent or complete any of the study tasks as determined by the Principal Investigator and/or Study Physician
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Crossover Assignment
- Maskování: Dvojnásobek
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
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Experimentální: Varenicline before placebo
Drug (Varenicline (Chantix)): Placebo Intervention to be administered is: participants will receive standard dosing regimen of Varenicline for 21 days total, followed by 14-day washout and 21 days of placebo. Standard dosing: 0.5 mg days 1-3; 0.5 mg bid days 4-7; 1.0 mg bid days 8-21. |
Intervention Drug (Varenicline (Chantix) will be administered in standard dosing in pill format: 0.5 mg days 1-3; 0.5 mg bid daily days 4-7; 1.0 mg bid daily days 8-21.
Ostatní jména:
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Experimentální: Placebo then Varenicline
Placebo: Drug Varenicline (Chantix) Intervention to be administered is: participants will receive 21 days of placebo, followed by 14-day washout and standard dosing regimen of Varenicline for 21 days total. Standard dosing: 0.5 mg days 1-3; 0.5 mg bid days 4-7; 1.0 mg bid days 8-21. Intervention 'Drug (Varenicline (Chantix)): Placebo' |
Intervention Drug (Varenicline (Chantix) will be administered in standard dosing in pill format: 0.5 mg days 1-3; 0.5 mg bid daily days 4-7; 1.0 mg bid daily days 8-21.
Ostatní jména:
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Smoking Topography: Total Puff Volume
Časové okno: Days 1-21 of each of 2 study periods
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Total puff volume was created by summing all of the puffs from the cigarette smoked in the lab at each time point (each lab visit).
This value represents the total volume of smoke extracted from a single cigarette and it a standard measure of smoking behavior.
A total puff volume represents the total smoking volume from a cigarette.
Values are reported in milliliters.
Value of interest is the average puff volume across all sessions for all participants in a group and is reported as a key measure of smoking behavior.
Analyses were repeated measures analysis of variance where individual, time and drug were within factors.
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Days 1-21 of each of 2 study periods
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The Number of Choices of a Nicotine Containing Cigarette Compared to a Non-nicotine Cigarette.
Časové okno: Days 1, 7, 21 of each of two 21 day study periods
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Participants were given 4 puff choices (between a nicotine containing and de-nicotinized cigarette) on 6 study visits, for a total of 24 choices.
Number of puffs reported is average across both study periods.
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Days 1, 7, 21 of each of two 21 day study periods
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Daily Cigarette Consumption
Časové okno: Two 21 day study periods
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Average of the number of cigarettes smoked per day
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Two 21 day study periods
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Total Nicotine Metabolites From Urine Samples
Časové okno: Samples from Day 1 and Day 21 of two 21 day Periods
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Total urinary metabolites from urine samples collected at Day 1 and Day 21
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Samples from Day 1 and Day 21 of two 21 day Periods
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Nicotine Levels From Urine Samples
Časové okno: Samples from Day 1 and Day 21 of two 21 day Periods
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Nicotine levels from urine samples collected at Day 1 and Day 21.
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Samples from Day 1 and Day 21 of two 21 day Periods
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Cotinine Levels From Urine Samples
Časové okno: Samples from Day 1 and Day 21 of two 21 day Periods
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Cotinine levels from urine samples collected at Day 1 and Day 21.
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Samples from Day 1 and Day 21 of two 21 day Periods
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Carbon Monoxide Levels
Časové okno: Samples from Day 1 and Day 21 of two 21 day Periods
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Exhaled breath carbon monoxide levels collected at Day 1 and Day 21 sessions.
Alveolar carbon monoxide is a validated assessment of smoke exposure.
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Samples from Day 1 and Day 21 of two 21 day Periods
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Subjective Measures to Assess Smoking Urges
Časové okno: Days 21 of each of the two 21-day study periods, range 1(low)-7(high)
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Craving for cigarettes was assessed with the 32-item Questionnaire of Smoking Urges (QSU) during each study visit.
In order to calculate the QSU measure, each item is rated on a Likert-type scale from 1 (strongly disagree) to 7 (strongly agree).
The values are then summed to create a single total score.
Well validated 2 factor subscale scores were also created by summing the item scores for the 2 factors: Factor 1 reflects the desire to smoke for pleasure and Factor 2 reflects urges to smoke to relieve withdrawal-related negative affect.
Internal consistency for each scale across all time points was high (Cronbach's α > 0.95, 0.85, and 0.95 for Factor 1, Factor 2, and QSU total, respectively).
Scale range is 1-7 where 1 is low urge to smoke and 7 represents high urge to smoke.
Data was collected at each time point but outcome measure of interest is end of period.
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Days 21 of each of the two 21-day study periods, range 1(low)-7(high)
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Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Publikace a užitečné odkazy
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Primární dokončení (Aktuální)
Dokončení studie (Aktuální)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Odhad)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- 808930
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