Abstract
This study analyzed the effect of olanzapine on a psychopathology-based scale assessing abnormal thought processes and examined the relationship between improvement on this scale and mania and depression improvement in acutely manic patients. The study sample (N = 254) was pooled from two double-blind, randomized, placebo-controlled clinical trials. Disturbance in thought processes was measured by the Positive and Negative Symptom Scale cognitive component (PANSS-Cognitive) score. Mood severity was measured by the Young-Mania Rating Scale (Y-MRS) and Hamilton Depression Inventory (HAM-D). Last-observation-carried-forward (LOCF) changes from baseline to endpoint (Week 3) were presented for patients who had at least one post-baseline assessment. Olanzapine-treated patients experienced modest but significant improvement in PANSS-Cognitive score (olanzapine: -4.25 n = 124; placebo: -1.69 n = 120, p < 01), regardless of age, gender, mania subtype (pure, mixed), course (rapid or non-rapid cycling), or the presence or absence of psychotic features. PANSS-Cognitive improvement was more highly correlated with mania than depression improvement. Olanzapine improved abnormal thought processes measured by the PANSS-Cognitive score in patien...Continue Reading
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