Interpersonal problems and negative mood as predictors of within-day time to drinking.

Using data collected via handheld electronic diaries (EDs), we examined within-day associations between early-day negative moods and stress and subsequent time to drinking. A sample of 97 (n=48 women) adults recruited to participate in a drinking-reduction intervention study used EDs to record mood and interpersonal problems at randomly selected times during each of 3 reporting intervals and drinking as it occurred each day for 21 days. Using multilevel hazard models, we tested associations between early-day stress/negative mood ratings and time to drinking as well as potential moderating effects of drinking to cope (DTC) motives on these associations. Whereas previous analyses of these data showed no associations between early-day negative moods and number of drinks consumed later in the day, here we found significant associations between negative moods and time to drinking. Associations involving negative moods, DTC, and hazard for drinking varied depending on time of day, and some mood effects were moderated by DTC. These findings suggest that time to drinking may be more sensitive to the effects of acute negative mood states than is drinking quantity. Copyright (c) 2009 APA, all rights reserved.