The sensitivity analysis (Supplementary Table S1) showed a clear effect of externalizing on age of onset in mild AUD, moderate AUD, and severe AUD (p < 0.001 for each). For internalizing, there was an effect in moderate AUD (p < 0.011) and severe AUD (p < 0.001). No statistical interaction was seen between the effect of externalizing and the effect of internalizing.
