The study was designed as a double-blind randomized controlled trial, with research assessors and patients intended to be blind to the intervention status. The staff members performing the assessment were not involved in implementing any aspect of the intervention.68 patients were randomized to assigned 6 weeks by olanzapine or placebo. Medications were provided in double-blind fashion. The assessments include Montgomery-Asberg Depression Rating Scale, Young Mania Rating Scale, clinical Global Impressions-Severity of Illness scale, Clinical Global Impressions-Improvement scale, response and remission rates, and Treatment Emergent Symptom Scale.
