Abstract
In a representative U.S. sample of 18,352 current drinkers 18 years of age and over, past-year alcohol- or other drug-related fighting and suicide attempt/ideation both showed strong positive bivariate associations with volume of alcohol intake, proportion of drinking days resulting in intoxication (the intoxication index) and past-year drug use, especially multiple drug use. After adjusting for potential confounders in a series of multiple logistic regression models, average daily ethanol intake retained a significant positive association with the odds of alcohol- and other drug-related fighting, as did the intoxication index–except among drinkers who used marijuana only (i.e., no other drugs). The odds of this outcome also were increased by use of simulants or cocaine only, use of multiple drugs and use of marijuana–the latter primarily among women. The odds of past-year suicide attempt/ideation were positively associated with the intoxication index but were not significantly associated with average dai...
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