Changes in Positive and Negative Syndrome Scale–Derived Hostility Factor in Adolescents with Schizophrenia Treated with Aripiprazole: Post Hoc Analysis of Randomized Clinical Trial Data

Abstract Introduction: This post hoc analysis evaluated the effects of aripiprazole on Positive and Negative Syndrome Scale (PANSS) Hostility factor scores in adolescents with schizophrenia. Methods: In total, 302 adolescents (13–17 years) with schizophrenia were enrolled in a 6-week, multicenter, double-blind, randomized, placebo-controlled trial comparing aripiprazole (10 or 30 mg/day) with placebo. The PANSS was the primary outcome measure. To determine the effect of aripiprazole on hostility, a post hoc analysis of the PANSS Hostility factor and individual items was performed. Results: Aripiprazole was superior to placebo in reducing PANSS Hostility factor scores in adolescents with schizophrenia. After 6 weeks, aripiprazole 10 mg/day and aripiprazole 30 mg/day showed a statistically significant improvement versus placebo (−3.0, −3.7, versus −2.1; p < 0.05; last observation carried forward [LOCF]) in the PANSS Hostility factor. For aripiprazole 30 mg/day, statistically significant separation from plac...