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- Klinische proef NCT00747643
Varenicline Effects on Cue Reactivity and Smoking Reward/Reinforcement
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
We proposed the following primary hypotheses:
- Tonic (i.e., non-cue-provoked) craving levels would be lower in participants receiving varenicline versus placebo.
- Cue-provoked cravings (self-report and physiological responding) would be lower in participants receiving varenicline versus placebo. (Secondary indices of craving include heart rate and skin conductance.)
- The two primary indices of nicotine reward/reinforcement (mCEQ and choice index) would be lower in participants receiving varenicline versus placebo. (Secondary indices of nicotine reinforcement include smoking topography variables.)
A final sample of 100 non-treatment seeking daily smokers were recruited from the Tampa-St. Petersburg-Clearwater Metropolitan Area via paid advertisements in, and press releases to, local newspapers, as well as targeted outdoor advertising via flyers (e.g., on public transportation).
Following the screening session, participants were randomly assigned to receive either varenicline or placebo medication.
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Florida
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Tampa, Florida, Verenigde Staten, 33612
- H. Lee Moffitt Cancer Center and Research Institute
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- 18-60 years of age
- Smoke at least 15 cigarettes daily
- Expired-air carbon monoxide (CO) > 10 ppm
- Medically eligible to receive Varenicline.
Exclusion Criteria:
- Patients who are pregnant or lactating
- Who show evidence of renal dysfunction (BUN > 25 mg/dL, or creatinine > 1.3 mg/dL)
- Are using other smoking cessation medications
- Have current psychiatric disorders (i.e. major depression, manic depression, and/or psychotic episodes) as determined by the Structured Clinical Interview for DSM Disorders (SCID) (First et al., 1996), will be excluded
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Actieve vergelijker: Varenicline
For participants in the varenicline group, the medication doses followed the recommended dose schedule for the first 15 days of treatment: 0.5 mg once a day on days 1-3, 0.5 mg twice a day on days 4-7, and 1 mg twice a day on days 8-15.
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Participants in this group received varenicline according to the schedule in the Arm Description.
Andere namen:
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Placebo-vergelijker: Placebo
Participants in this group received a placebo instead of medication.
The placebo was taken once a day on days 1-3, twice a day on days 4-15.
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Participants in this group received a placebo and did not receive any active medication according to the schedule in the Arm Description.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Tonic Craving Score (QSU) Based on Self Reports
Tijdsspanne: 3 weeks per participant
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Tonic Craving 1 (lowest) to 7 (highest).
The Questionnaire of Smoking Urges (QSU), our primary measure of tonic craving, is a 32-item instrument, including 2 separate factor scales that roughly correspond to the desire to smoke for its pleasurable effects (positive reinforcement) or to remove unpleasant feelings of negative affect or withdrawal (negative reinforcement) (Tiffany and Drobes 1991).
Following overnight abstinence, each session included assessment of tonic craving, reactivity (including craving) to smoking cues.
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3 weeks per participant
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Cue-provoked Cravings
Tijdsspanne: 3 weeks per participant
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Strength of Craving 0 (lowest) to 20 (highest).
One item 0 - 20 Likert scale "How strong was your craving to smoke a cigarette?"
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3 weeks per participant
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Smoking Topography - Number of Puffs on a Cigarette
Tijdsspanne: 3 weeks per participant
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# Puffs = total number of puffs taken at Assessment Session.
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3 weeks per participant
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A Measure of the Subjective Expected Value of a Cigarette
Tijdsspanne: 3 weeks per participant
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The cigarette choice procedure (Kidorf, Stitzer, and Griffiths, 1995) is a measure of the desire to smoke a cigarette.
Participants are asked to hypothetically choose between smoking a cigarette now or receiving a small amount of money (from 10 cents up to $6 in increments of 10 cents).
A crossover ($) value, at and above which participants prefer money, is obtained (Reid, Palmar, Raghavan, and Flammino, 2007).
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3 weeks per participant
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Medewerkers en onderzoekers
Medewerkers
Publicaties en nuttige links
Nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- MCC-15444
- 106842 (Andere identificatie: USF IRB)
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