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Randomized Controlled Trial
. 2015 Nov;17(11):1385-92.
doi: 10.1093/ntr/ntv011. Epub 2015 Feb 2.

Positive Psychotherapy for Smoking Cessation: A Pilot Randomized Controlled Trial

Affiliations
Randomized Controlled Trial

Positive Psychotherapy for Smoking Cessation: A Pilot Randomized Controlled Trial

Christopher W Kahler et al. Nicotine Tob Res. 2015 Nov.

Abstract

Objective: Greater depressive symptoms and low positive affect (PA) are associated with poor smoking cessation outcomes. Smoking cessation approaches that incorporate a focus on PA may benefit smokers trying to quit. The purpose of this study was to conduct a pilot randomized clinical trial to compare standard smoking cessation treatment (ST) with smoking cessation treatment that targets positive affect, termed positive psychotherapy for smoking cessation (PPT-S).

Method: Smokers who were seeking smoking cessation treatment were assigned by urn randomization to receive, along with 8 weeks of nicotine replacement therapy, either ST (n = 31) or PPT-S (n = 35). Seven-day point prevalence smoking abstinence was biochemically confirmed at 8, 16, and 26 weeks.

Results: Compared to ST, a greater percentage of participants in PPT-S were abstinent at 8 weeks, 16 weeks, and 26 weeks, but these differences were nonsignificant. In a more statistically powerful longitudinal model, participants in PPT-S had a significantly higher odds of abstinence (adjusted odds ratio [AOR] = 2.75; 95% CI = 1.02, 7.42; p = .046) across follow-ups compared to those in ST. The positive effect of PPT-S was stronger for those higher in PA (OR = 6.69, 95% CI = 1.16, 38.47, p = .03). Greater use of PPT-S strategies during the initial 8 weeks of quitting was associated with a less steep decline in smoking abstinence rates over time (OR = 2.64, 95% CI = 1.06, 6.56, p =.04).

Conclusion: This trial suggests substantial promise for incorporating PPT into smoking cessation treatment.

Trial registration: ClinicalTrials.gov NCT01451814.

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Figures

Figure 1.
Figure 1.
CONSORT diagram showing participant flow. CONSORT = Consolidated Standards of Reporting Trials; PPT = positive psychotherapy; ST = standard treatment.
Figure 2.
Figure 2.
PANAS scores over the 6 sessions of counseling and the 3 follow-ups. Error bars represent standard errors. PANAS = Positive Affect and Negative Affect Scales; NA= Negative Affect; PA = Positive Affect. Scores on each scale can range from 0 to 40. ST = standard treatment. PPT-S = positive psychotherapy for smoking cessation.
Figure 3.
Figure 3.
CES-D Scores over the 6 sessions of counseling and the 3 follow-ups. Error bars represent standard errors. CES-D = Center for Epidemiologic Studies Depression Scale. Total scores can range from 0 to 60. Positive Affect scores are the item average for positive affect items on the CES-D and range from 0 to 3. ST = standard treatment. PPT-S = positive psychotherapy for smoking cessation.

References

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