Predicting medication-free treatment response in acute psychosis: cross-validation from the Finnish Need-Adapted Project.

This study tested predictors of 2-year antipsychotic-free response from the Soteria study (older, better social functioning, fewer cardinal symptoms) using data from the Finnish Acute Psychosis Integrated treatment study. The quasi-experimental study compared need-adapted family-oriented psychosocial intervention within a 3-week antipsychotic-free trial to psychosocial intervention plus antipsychotic medications. Forty-six percent of experimental completers (37% of intent-to-treat subjects) were successfully treated without antipsychotic medications for the entire 2-year study.