Table 3.

Co-sibling analysis

Co-sibling analysis	Mothers	Fathers
Sample size, n	21 276	17 904
Model A	1.25 (1.13; 1.38)	1.10 (1.01; 1.19)
Model D	1.27 (1.14; 1.41)	0.98 (0.90; 1.06)

AUD = alcohol use disorders. Sample size = female respective male pairs that are discordant for the exposure variable AUD in child. Model A: unadjusted. Model D: adjusted for parental year of birth, age at childbirth, sex of the child, educational level, marital status, AUD in parent. Hazard ratios with 95% CI in parental full siblings where one had an offspring with AUD and the other did not.