Tobacco Dependence
Conditions
Brief summary
Smoking remains the single most preventable cause of morbidity and mortality in the United States, accounting for approximately half a million deaths every year. The current study will investigate the efficacy and mechanisms of change of a novel smoking cessation intervention. The current study will thus provide essential information regarding a treatment that has the potential to enhance the efficacy of existing smoking cessation interventions, thereby having a beneficial impact on the public health of the United States.
Detailed description
Cigarette smoking remains the single most preventable cause of mortality and morbidity in the United States. Long-term abstinence rates for even the most rigorous of smoking cessation treatments range between 20% and 35%. It is therefore essential that research continue to investigate novel smoking cessation interventions. Leading contemporary theories of addiction motivation posit that the escape or avoidance of negative affect withdrawal (NAW) symptoms (e.g., anger, anxiety, and depression/sadness) constitutes a strong motivational basis for cigarette smoking and plays a critical role in relapse to cigarette use. However, whereas NAW symptoms appear to exert a powerful influence on smoking cessation treatment outcome, smoking cessation interventions may exert only modest effects on NAW symptoms. Accordingly, it has been proposed that smoking cessation interventions may be augmented by aiding smokers in the practice of NAW regulation strategies. The primary goal of this investigation is to evaluate an early withdrawal exposure plus NAW regulation training intervention for smoking cessation. Specific aims include evaluating the efficacy of the treatment components and investigating potential mediators and moderators of the treatment components. Participants will be adult smokers (N = 400) of at least 5 cigarettes per day with the intention to quit smoking. Using a factorial design, participants will be randomized to early withdrawal exposure (yes vs. no) and behavioral intervention (NAW regulation training vs. relaxation control training), resulting in four distinct conditions. The investigator's primary hypothesis is that early withdrawal exposure plus NAW regulation training will produce higher rates of seven-day point-prevalence abstinence at 1, 3, and 6 months after end-of-treatment, suggesting a synergistic (i.e., non-additive) effect of the two intervention components. Mediators (e.g., in-session withdrawal symptoms) and moderators (e.g., demographic characteristics, tobacco dependence) will be investigated via established analyses. These data will advance the experimental intervention with a focus on targeting mechanisms of change as well as participant characteristics to which the intervention may be tailored. The experimental intervention described in the current proposal has the potential to ultimately enhance the efficacy of existing smoking cessation interventions and will therefore contribute uniquely to the field.
Interventions
BEHAVIORALrelaxation strategies
Participants will generate and refine relaxation techniques with the aid of a therapist
BEHAVIORALearly withdrawal exposure
Exposure to the first 4 hours of abstinence across 4 separate sessions
BEHAVIORALcognitive-behavioral withdrawal regulation strategies
Participants will generate and refine individualized withdrawal regulation strategies with the aid of a therapist
Sponsors
University of Alabama at Birmingham
National Institute on Drug Abuse (NIDA)
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
DOUBLE (Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* at least 18 years of age * smoke at least 5 cigarettes per day * Expired breath carbon monoxide (CO) reading of at least five parts per million * report the intention to quit * reside in the Birmingham area with no plan to relocate outside of the area in the next 6 months * access to a telephone
Exclusion criteria
* inability to speak English * presence of a condition that contraindicates use of the nicotine patch * presence of conditions that might interfere with compliance with the protocol or greatly complicate treatment * any acutely life-threatening disease * concurrent participation in a formal treatment program for smoking cessation * current use of any pharmacotherapy for smoking cessation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Smoking cessation as evaluated by self-reported, biochemically-confirmed seven-day point-prevalence abstinence | 1 month after end-of-treatment | Self reported abstinence from smoking ("no smoking, not even a puff) in the past seven days, biochemically confirmed by a breath carbon monoxide reading of 3 or less |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Cessation milestones as determined by the Timeline Followback Interview | 1 month after end-of-treatment | 1\) Was initial abstinence achieved (was there any day of non-smoking within the first two weeks after the quit date; yes or no)?; 2) latency to lapse (number of days to the first cigarette after the quit day); 3) was there a progression from lapse to relapse (defined as seven consecutive days of smoking; yes or no)? |
| Physical tobacco dependence | 1 month after end-of-treatment | Tobacco dependence as measured by the Fagerstrom Test of Cigarette Dependence (FTCD). The FTCD is a widely used 9-item measure of physical dependence. FTCD scores, computed from the sum of the items, range from 0 to 10, with greater scores indicating greater dependence. |
| Motivational tobacco dependence | 1 month after end-of-treatment | Tobacco dependence as measured by the and the Wisconsin Inventory of Smoking Dependence Motives (WISDM) questionnaire. The WISDM-68 is a 68-item measure designed to assess dependence as a motivational state on 13 subscales: Affiliative Attachment, Automaticity, Loss of Control, Behavioral Choice, Cognitive Enhancement, Craving, Cue Exposure, Negative Reinforcement, Positive Reinforcement, Social and Environmental Goads, Taste and Sensory Properties, Tolerance, and Weight Control. Scores on each subscale, computed from the mean of their respective items, range from 1 to 7, with greater scores indicating greater dependence. |
| Withdrawal symptoms | 1 month after end-of-treatment | Withdrawal symptoms as measured by the 28-item Wisconsin Smoking Withdrawal Scale (WSWS). The WSWS measures smoking withdrawal symptoms on 7 subscales: Anger, Anxiety, Concentration, Craving, Hunger, Sadness, and Sleep Difficulty. Scores on each subscale, computed from the mean of their respective items, range from 0 to 4, with greater scores indicating greater withdrawal. |
| Abstinence-related expectancies | 1 month after end-of-treatment | Abstinence-related expectancies as measured by the 55-items Smoking Abstinence Questionnaire (SAQ). The SAQ measures expectancies for abstinence from smoking on 10 subscales: Withdrawal, Social Improvement/Non-smoker Identity, Adverse Outcomes, Treatment Effectiveness, Common Reasons, Barriers to Treatment, Social Support, Optimistic Outcomes, Coffee Use, and Weight Gain. Scores on each subscale, computed from the mean of their respective items, range from 0 to 6, with greater scores reflecting stronger expectancies. |
| Thoughts about abstinence | 1 month after end-of-treatment | Motivation to quit, expected difficulty quitting, and confidence in one's ability to quit are measured by one item each by the Thoughts About Abstinence (TAA) questionnaire. Scores on each item range from 1 to 10, with greater scores indicating greater motivation to quit, expected difficulty quitting, and confidence in one's ability to quit, respectively. |
| Intolerance for smoking abstinence discomfort | 1 month after end-of-treatment | Intolerance for smoking abstinence discomfort, as measured by the 17-tem Intolerance for Smoking Abstinence Discomfort Questionnaire (IDQ-S). The IDQ-S assesses the inability to tolerate smoking abstinence discomfort on two subscales: Withdrawal Intolerance and Lack of Cognitive Coping. Scores on each subscale, computed from the mean of their respective items, range from 1 to 5, with greater scores indicating greater inability to tolerate abstinence. |
Countries
United States
Outcome results
None listed