INTRODUCTION: Cigarette smokers report using electronic cigarettes (e-cigarettes) to reduce or quit smoking, but findings are mixed regarding the benefit and risk of e-cigarettes in this population, and effects of gender are unknown. METHODS: The Population Assessment of Tobacco and Health (PATH; waves 1 and 2; adult interviews) was used to evaluate relationships among wave 1 e-cigarette use (daily, nondaily, never) and gender and their association with transitions (quit vs. current; relapse vs. former) in cigarette smoking status across waves 1 and 2 of the PATH study. RESULTS: Daily e-cigarette users had higher odds of quitting smoking (odds ratio [OR] = 1.56, 95% confidence interval [CI] = 1.12 to 2.18) compared with never e-cigarette users. Conversely, daily and nondaily e-cigarette users were at greater risk of smoking relapse (OR = 1.84, 95% CI = 1.15 to 2.94 and OR = 1.85, 95% CI = 0.99 to 3.46, respectively) compared with never e-cigarette users. Women were less likely to quit smoking compared with men independent of e-cigarette use (OR = 0.76, 95% CI = 0.59 to 0.99). In stratified analyses, daily or nondaily e-cigarette use did not increase the likelihood of quitting or relapse in women. In men, daily and nondaily e-cigarette users were at greater risk of smoking relapse (OR = 2.96, 95% CI = 1.49 to 5.86 and OR = 3.05, 95% CI = 1.29 to 7.17, respectively) compared with men who were never e-cigarette users. CONCLUSIONS: Findings identify e-cigarettes as a potential aid for smoking cessation but also as a potential risk for smoking relapse in men only. Overall, women were less likely to quit smoking, and e-cigarette use did not impact their ability to quit or to stay quit. IMPLICATIONS: Cigarette smokers report using e-cigarettes to reduce or quit smoking, but findings are mixed regarding the benefit and risk of e-cigarettes in this population. Using data from the newly available PATH (waves 1 and 2; adult interviews), our findings identify e-cigarettes as a potential aid for smoking cessation but also identify e-cigarettes as a potential risk for smoking relapse in men only. These findings may have implications for the regulation of e-cigarettes by the Food and Drug Administration and the benefit-cost ratio of e-cigarette use in smokers.
INTRODUCTION: Cigarette smokers report using electronic cigarettes (e-cigarettes) to reduce or quit smoking, but findings are mixed regarding the benefit and risk of e-cigarettes in this population, and effects of gender are unknown. METHODS: The Population Assessment of Tobacco and Health (PATH; waves 1 and 2; adult interviews) was used to evaluate relationships among wave 1 e-cigarette use (daily, nondaily, never) and gender and their association with transitions (quit vs. current; relapse vs. former) in cigarette smoking status across waves 1 and 2 of the PATH study. RESULTS: Daily e-cigarette users had higher odds of quitting smoking (odds ratio [OR] = 1.56, 95% confidence interval [CI] = 1.12 to 2.18) compared with never e-cigarette users. Conversely, daily and nondaily e-cigarette users were at greater risk of smoking relapse (OR = 1.84, 95% CI = 1.15 to 2.94 and OR = 1.85, 95% CI = 0.99 to 3.46, respectively) compared with never e-cigarette users. Women were less likely to quit smoking compared with men independent of e-cigarette use (OR = 0.76, 95% CI = 0.59 to 0.99). In stratified analyses, daily or nondaily e-cigarette use did not increase the likelihood of quitting or relapse in women. In men, daily and nondaily e-cigarette users were at greater risk of smoking relapse (OR = 2.96, 95% CI = 1.49 to 5.86 and OR = 3.05, 95% CI = 1.29 to 7.17, respectively) compared with men who were never e-cigarette users. CONCLUSIONS: Findings identify e-cigarettes as a potential aid for smoking cessation but also as a potential risk for smoking relapse in men only. Overall, women were less likely to quit smoking, and e-cigarette use did not impact their ability to quit or to stay quit. IMPLICATIONS: Cigarette smokers report using e-cigarettes to reduce or quit smoking, but findings are mixed regarding the benefit and risk of e-cigarettes in this population. Using data from the newly available PATH (waves 1 and 2; adult interviews), our findings identify e-cigarettes as a potential aid for smoking cessation but also identify e-cigarettes as a potential risk for smoking relapse in men only. These findings may have implications for the regulation of e-cigarettes by the Food and Drug Administration and the benefit-cost ratio of e-cigarette use in smokers.
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