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Efficacy of guided self-change for smoking cessation in chronic obstructive pulmonary disease patients: A randomized
Mehran Zarghami1,2, Fatemeh Taghizadeh2, Ali Sharifpour3,4
1Department of Psychiatry, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
Introduction:
The aim of this study was to examine the efficacy of guided self-change (GSC), nicotine replacement therapy (NRT), and their combination, on smoking cessation among patients with COPD.
Methods:
A total of 60 participants were randomly assigned to three groups for GSC (n=20), nicotine replacement therapy (NRT) (n=20) or their combination (n=20), from December 2016 to November 2017. The quality of life (QoL) questionnaire, clinical assessment test (CAT) and exhaled carbon monoxide (CO), were measured at baseline and post-treatment.
Results:
At 6, 12, and 29 weeks, the abstinence rate in the NRT group was 5.3%, 15.8% and 21.1%, in the GSC group 21.1%, 31.6% and 47.4%, and in the combined group 36.8%, 36.8% and 47.4%, respectively. The exhaled CO in the NRT group was greater than the GSC group, however this difference was not statistically significant (3.4; 95% CI: -0.24-7.0; p=0.067), CO levels in the combined group were less than the GSC group, while this difference was also not significant (-0.75; 95% CI : -4.2-2.7; p=0.68). CAT and QoL recovery in the GSC and combined groups were higher than in the NRT group (9.2; 95% CI: 5.0-13.4; p=0.001) and (-4.5; 95% C: -8.1- -0.6; p=0.02), respectively. However, differences between combined and GSC groups were not significant (p=0.24 and p=0.41, respectively). There was a statistically significant difference between the abstinence rate in the GSC or combined group and the NRT group (p=0.001). The GEE model showed that GSC reduced the odds of smoking compared with the NRT group (interaction group effect) (OR=0.31, 95% CI: 0.022-0.545; p=0.001).
Conclusions:
In our context among COPD patients, GSC was more effective in decreasing smoking than NRT alone. Moreover, the recovery of exhaled carbon monoxide, CAT and QoL in GSC was more than in the NRT group. Moreover, since GSC was as effective as GSC plus NRT, the effectiveness of the combination method for smoking cessation in COPD patients may be attributed to GSC.Clinical trial registration details: IRCT201609271457N11; www.irct.ir.
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