Contrasting smokers' and nonsmokers' subjective reactions to alcohol during ecologically assessed drinking episodes
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[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Alcohol and tobacco use are frequently associated both within and between persons. Differences in subjective response have been suggested as a possible mechanism underlying alcohol and tobacco co-use. The current ecological momentary assessment investigation aimed to provide real-time, ecologically valid evidence from both smokers and nonsmokers about alcohol response across entire drinking episodes. Palm pilots were provided to n=169 light smokers, n=89 heavy smokers, and n=146 nonsmokers for three weeks. Participants were instructed to initiate an assessment each time they finished a first drink of alcohol. In order to capture the entire drinking episode, a flexible set of follow-up assessments was administered after initiation of the first drink record. Three-level linear mixed models were used to analyze the data. The main tests of interest were the effects of smoking status, estimated blood alcohol content (eBAC), limb of the blood alcohol content (BAC) curve, and their two- and three-way interactions on current buzz from alcohol. A significant three-way interaction was found for light smokers. These results suggest that compared to nonsmokers on the descending limb of the BAC curve, light smokers experience a diminished buzz response.
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