These missing data were due to screening procedures that excluded individuals without considerable histories of substance misuse, as alcohol and drug naive individuals would have not had the opportunities to perpetrate alcohol-related and drug-related aggression. Yet 7,442 participants provided full SSAGA aggression datasets, lending further reliability to our findings. Sixth, participants in COGA were selected based on their heightened risk for alcohol misuse. Future studies are needed to determine whether our factor analytic results will hold in less risk-prone samples.
