Zero-order correlations among key study variables are summarized in Supplementary Table 3. Pearson and polyserial correlations are presented for pairs of continuous variables and pairs where one variable is continuous and the other is binary, respectively. Selected effects are summarized here. In the EA sample, parental relationship discord was associated with more AUDSx (r = .18, 95% CI [0.15, 0.22]), higher MaxDrinks (r = 0.09, 95% CI [0.05, 0.12]), earlier Initiation (r = −0.07, 95% CI [−0.10, −0.03]) and earlier Intoxication (r = −0.16, 95% CI [−0.19, −0.12]). Parental divorce was associated with earlier Initiation (r = −0.30, 95% CI [−0.35, −0.24]) and earlier Intoxication (r = −0.17, 95% CI [−0.22, −0.12]), but was not significantly associated with AUDSx (r = −0.02, 95% CI [−0.07, 0.04]) nor MaxDrinks (r = 0.01, 95% CI [−0.04, 0.06]). Parental relationship discord was associated with parental divorce (r = 0.30, 95% CI [0.25, 0.35]).
