Smoking
Conditions
Brief summary
Our primary goal is to examine the effectiveness of a multi-factor maintenance treatment strategy in promoting longer-term smoking abstinence. The investigators will also conduct secondary analyses of mediators and moderators of treatment response.
Detailed description
400 adult smokers will be randomized. Our primary goal is to examine the effectiveness of a multi-factor maintenance treatment strategy in promoting longer-term smoking abstinence. All smokers will receive the same Acute Phase Treatment that combines nicotine patch, bupropion and intensive self-regulatory skills training. Nicotine patches will be provided for 8 weeks and bupropion and skills training will be provided for of 9 weeks. Participants will then enter a Maintenance Treatment Phase during which half (n=200) will receive three individualized relapse prevention training sessions spread over a 12 week period. They will also receive 12 weeks of self-administered RPT administered via written treatment modules. Finally, telephone counseling will be provided in conjunction with an Interactive Voice Response system (IVR) that will allow early detection of smoking slips and rapid response by treatment staff. The other half (n=200) will be assigned to a control condition that consists of three counselor-led sessions of supportive therapy spread over a 12 week period.
Interventions
BEHAVIORALcognitive behavior therapy
At each clinic session, staff met with participants individually for 30 minutes to develop cognitive and behavioral skills to resist urges to smoke. Staff used self-efficacy questionnaires to assess participants' confidence in their abilities to resist urges to smoke in specific situations and behavioral worksheets to help participants articulate treatment plans to be used in managing their behavior in these situations without smoking. Those participants randomized to extended CBT continued to work with treatment staff individually on the development and use of cognitive and behavioral cessation and relapse prevention skills. Treatment sessions, lasting approximately 30 minutes, were conducted at the San Jose clinic site at weeks 8, 12, 16 and 20.
Sponsors
National Institute on Drug Abuse (NIDA)
Stanford University
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy adult cigarette smokers smoking at least 10 cigarettes per day
Exclusion criteria
* Currently pregnant * Currently breastfeeding * Currently diagnosed with a seizure disorder, major depression, liver disease, kidney disease, congestive heart failure * History of a seizure, seizure disorder, significant head trauma or central nervous system tumor * Family history of seizures * Currently using intravenous drugs * Currently using any drugs (marijuana, alcohol, cocaine, opiates, stimulants, etc.) on a daily basis * Currently using any over-the-counter stimulants and anorectics (diet pills) * Currently on bupropion (Wellbutrin, Wellbutrin SR) or other antidepressants, monoamine oxidase inhibitors, antipsychotics, benzodiazepines, theophylline, systemic steroids or levodopa * Currently on NRT or bupropion (Zyban) * Current or past diagnosis of anorexia nervosa or bulimia nervosa * Previous allergic response to bupropion or NRT * Previous failed quit attempt using NRT and bupropion in combination
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| expired-air carbon monoxide confirmed 7-day point prevalence smoking abstinence | 52 weeks | expired-air carbon monoxide \< 10 ppm and self report of no smoking for 7 consecutive days prior to assessment |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| depression symptoms | 52 weeks | symptoms of depression measured with the CES-D |
Countries
United States
Outcome results
None listed