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Adult smokers (21-65) and adolescent smokers (18 - 21) years of age residing in Alameda and Santa Clara counties will serve as the target population for this study. A total of 400 smokers meeting eligibility criteria will be randomized. Treatment will include both open label and extended treatment phases. Randomization. Participants will be randomized to extended therapy or control conditions at baseline (prior to open label treatment) and the analysis will be intention-to-treat (ITT) to avoid the threat of selection bias. Primary hypothesis. Smokers randomized to receive CBT during extended treatment will have a higher prolonged abstinence rate (PA) at 52 week and 104 week follow-up than participants in the Supportive therapy Control treatment.
During open label treatment, all receive CBT and zyban and nicotine patch. At week 10 those who continue to smoke will be switched to varenicline through week 26. At week 10 those who are abstinent and report low levels of craving and low levels of depression symptoms will be withdrawn from study medications. Those who are abstinent but report difficulty with craving or depression symptoms will remain on zyban and NRT through week 26. Medication will not be available after week 26. All will receive CBT through week 26.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
cognitive behavior therapy (CBT)
Not yet recruiting
National Institute on Drug Abuse (NIDA)
Published on BioPortfolio: 2014-08-27T03:15:56-0400
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