ACEs Poorly Predict Mental Illness in Canadian Data
A 2026 nationally-representative study by Johnson, Parker, and Wade in the Canadian Journal of Psychiatry tested ACE-style screening in 7,608 Canadian adults and replicated what US, UK, and New Zealand cohorts already found: predictive accuracy is poor, with AUCs of 0.62 to 0.67 across anxiety, mood, substance use, and suicidality — all below the conventional …