Figure 1 shows onset of alcohol use disorders (AUDs) in subjects stratified by initial diagnoses of Externalizing disorder, Internalizing disorder, Both, or Neither. Figures 1a–c show onset of mild, moderate, and severe AUDs respectively. For each type of AUD, the relationship with comorbid disorders is significant by Log-rank test (p < 0.001) and Cox Proportional Hazards (p < 0.001).