Given that SUDs were at least moderately correlated with most externalizing phenotypes, we proceeded with our prespecified set of confirmatory factor analytic models. See Table 1 for model fit and Table 2 for factor loadings and reliability indices. In addition to the CFAs presented below, we ran exploratory factor analytic (EFA) models with 2–4 factors. No clear pattern emerged from the EFAs, the results of which are reported in Tables S2–S3 and S8–S9.
