Co‐action and changes in alcohol use during a smoking cessation attempt.

Aims: Three smoking cessation studies (CARE, Break Free, Por Nuestra Salud [PNS]) were used to measure changes in average alcohol consumption, binge drinking and alcohol‐related problems during a smoking cessation attempt and to explore co‐action with smoking abstinence. Design: CARE and PNS were longitudinal cohort cessation studies; Break Free was a two‐arm randomized clinical trial. Setting: Texas, USA. Participants: Participants were current smokers who were recruited from the community and received smoking cessation interventions. All participants received nicotine replacement therapy and smoking cessation counseling. CARE included 424 smokers (1/3 White, 1/3 African American and 1/3 Latino); Break Free included 399 African American smokers; PNS included 199 Spanish‐speaking Mexican‐American smokers. Measurements Weekly alcohol consumption was collected multiple times pre and post‐quit, and binge drinking and alcohol‐related problems were collected at baseline and 26 weeks post‐quit. Analyses included only those who indicated current alcohol use. Findings Average alcohol consumption decreased from baseline to 26 weeks post‐quit in CARE (F = 17.09, P < 0.001), Break Free (F = 12.08, P < 0.001) and PNS (F = 10.21, P < 0.001). Binge drinking decreased from baseline to 26 weeks post‐quit in CARE (F = 3.94, P = 0.04) and Break Free (F = 10.41, P < 0.001) but not PNS. Alcohol‐related problems decreased from baseline to 26 weeks post‐quit in CARE (Chi‐sq = 6.41, P = 0.010) and Break Free (Chi sq = 14.44, P = 0.001), but not PNS. Conclusions: Among current drinkers, alcohol use/problems appear to decrease during a smoking cessation attempt and remain low through 26 weeks after the quit attempt. Little evidence was found for co‐action, with smoking abstainers and relapsers showing similar change in alcohol use/problems. [ABSTRACT FROM AUTHOR]