Severe harm from others' drinking: A population-based study on sex differences and the role of one's own drinking habits.

INTRODUCTION AND AIMS: Despite the fact that many studies have focused on harm from others' drinking, there is a lack of knowledge regarding severe forms of these harms. This study aimed to assess sex differences in the prevalence of severe harm from others' drinking and sex-specific associations with one's own drinking. DESIGN AND METHODS: The data originated from a Swedish cross-sectional population survey (n = 15 576). Adjusted odds ratios of self-reported experiences of severe harm (harmed 'a lot') from others' drinking were calculated using logistic regression models. Additive interactions were used to determine sex-specific associations between own drinking and harm. RESULTS: The past-year prevalence of severe harm from known and unknown drinkers was higher among women (4.9% and 1.8%, respectively) than men (1.9% and 1.2%, respectively). Alcohol dependence predicted such harm for both sexes. No association with severe harm from known drinkers was found for male drinkers and binge drinkers, whereas female drinkers and binge drinkers reported more experiences of such harm. These differences indicated a supper-additive interaction (RERI: 0.92-1.47) and signs of having alcohol dependence among women indicated an even higher interaction (RERI: 5.37). DISCUSSION AND CONCLUSIONS: Women suffer more frequently from severe harm from others' drinking. Men and women report different experiences of severe harm from known people's drinking conditioning on their drinking behaviour. Sex-specific longitudinal studies are warranted to examine the relation between different behaviours and these harms. Whether these findings hold in settings with different drinking cultures and social norms should be explored.