Stress and Alcohol Consumption in Heavily Drinking Men: 2 Years of Daily Data Using Interactive Voice Response

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BackgroundThe relationship between stress and alcohol consumption has been shown in recent research to be more complex than originally thought. Cross-sectional and short-term longitudinal studies may not provide adequate data to address subtle but important relationships that impact consumption frequency and/or quantity.MethodsParticipants were 33 males recruited from local bars who reported their alcohol consumption, stress, and other related variables every day for 2 years. Reports were provided by automated telephone to a computer-based interactive voice response (IVR) system. By closely monitoring call completion, we were able to collect over 95% of the daily calls.ResultsUsing hierarchical linear modeling, daily stress was found to be associated with daily alcohol consumption, but in the opposite direction than would be predicted by a “drinking to cope” hypothesis. That is, same-day stress was found to be inversely related to consumption levels. Prior day's stress was not significantly associated with subsequent day's consumption; however, prior day's consumption was predictive of subsequent stress for up to 2 days. Similar analyses using week, rather than day, as the unit of measure paralleled these findings.ConclusionsThis study highlights the utility of using long-term daily process data to address important research and clinical questions in the alcohol field.

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