Descriptive statistics of the sample, including mean SRE scores by group prior to transformation, are provided in Table 1. Scores were significantly higher in the S4S sample relative to ALSPAC (t=7.49, p<0.0001). Differences were also observed across S4S ancestry groups (F(2,3653)=10.12, p<0.0001). Men’s scores were higher than women’s (t=20.51, p<0.0001). SRE scores were moderately correlated with later alcohol consumption (r=0.20–0.25 in S4S; r=0.18–0.28 in ALSPAC; all p<0.0001), which was operationalized in S4S as grams of ethanol per month (derived from responses to alcohol use frequency and quantity (Salvatore et al., 2016)) and in ALSPAC as AUDIT-C scores (Bush et al., 1998).
