Fathers' alcohol use and suicidal behaviour in offspring during youth and young adulthood Landberg J, Danielsson A-K, Hemmingsson T. Fathers' alcohol use and suicidal behaviour in offspring during youth and young adulthood.Objective: To examine the association between various indicators of father's alcohol use and suicidal behaviour in offspring during youth and young adulthood. Methods: The study is based on a cohort of 68 910 Swedish citizens who were born between 1970 and 1985 and have fathers who participated in conscription for compulsory military training in 1969/ 70. Information on fathers' alcohol use was collected during conscription. Offspring was followed for suicide attempts or completed suicides (through linkage with national registers) from age 12 to end of follow-up in 2008. Results: After adjustment for confounders, the hazard ratio (HR) for offspring to fathers who were heavy drinkers was 1.4 (95% CI 1.02, 1.93) while the associations turned non-significant for offspring to fathers who often drank into intoxication, HR 1.14 (0.68, 1.90). The highest risk for suicidal behaviour was found for offspring to fathers who had been apprehended for drunkenness two times or more, or with an alcohol-related hospitalization, with adjusted HRs of 2.1 (1.4, 3,14) and 1.9 (1.27, 2,85) respectively. Conclusion: Fathers' alcohol use is associated with increased risk of suicidal behaviour among offspring in youth and young adulthood.
Significant outcomes• The highest risk for suicidal behaviour was found for offspring to fathers with the most problematic consumption, that is having been apprehended for drunkenness or with an diagnosed alcohol-related disorder.• Offspring to fathers drinking heavily, but without alcohol-related disorders, were also of increased risk for suicidal behaviour.• Most indicators of fathers' alcohol use had an effect over and above other predictors of suicidal behaviour in offspring that tend to co-occur with parental heavy drinking.
Limitations• The self-reported indicators of fathers' alcohol use were measured in fathers' youth and do not measure actual exposure to parental drinking during the offspring childhood, but rather whether fathers' alcohol use in youth translates into risk for suicide in offspring.• We had no self-reported information on maternal alcohol use.
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