• Nan Jiang, Youn O Lee, and Pamela M Ling.
• Center for Tobacco Control Research and Education, University of California San Francisco, San Francisco, CA 94143, USA; School of Public Health, The University of Hong Kong, 5/F William MW Mong Block, 21 Sassoon Road, Hong Kong. Electronic address: nanjiang@hku.hk.
• Prev Med. 2014 Dec 1; 69: 166171166-71.

ObjectiveYoung adults frequently report social smoking. This study examined the relationship between different social smoking definitions and the co-use of cigarettes and alcohol, tobacco-related attitudes, and quitting efforts.MethodCross-sectional data were collected at bars using randomized time location sampling among young adults aged 21-26 in San Diego, California from 2010 to 2011 (73% response rate). Multivariable logistic regression examined if current smoking and quit attempts were associated with tobacco-related attitudes, and whether social smoking self-identification or behavior was associated with cigarette-and-alcohol co-use, tobacco-related attitudes, quit attempts, or quitline use.ResultsAmong 537 current smokers, 80% self-identified and 49% behaved as social smokers. Social smoking self-identification was positively associated with cigarette-and-alcohol co-use, and quit attempts. Social smoking behavior was negatively associated with tobacco marketing receptivity, quit attempts, and quitline use. Tobacco-related attitudes were associated with smoking but did not generally differ by social smoking status.ConclusionIdentification and behavior as a social smoker have opposing associations with co-use of cigarettes and alcohol and quit attempts. Tobacco cessation programs for self-identified social smokers should address co-use. Interventions denormalizing the tobacco industry or emphasizing the health effects of temporary smoking and secondhand smoke may address smoking among young adult bar patrons regardless of social smoking status.Copyright © 2014 Elsevier Inc. All rights reserved.

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