Study to Assess Accuracy of Rapid Mood Screener in Adult Participants With Unipolar Major Depressive Disorder or Bipolar 1 Disorder in Real World Setting

Bipolar I Disorder (BP1)is a severe chronic mood disorder characterized by manic and depression. BP1 has high probability of being misunderstood as unipolar major depressive disorder (MDD). The purpose of this study is to confirm Rapid Mood Screener (RMS) effectively classifies participants with BP1. Rapid Mood Screener (RMS) is a brief 6-item clinician-administered checklist, in which a participant's endorsement of four or more questions should trigger further clinical evaluation for BP1. Approximately 404 participants (303 with confirmed unipolar MDD and 101 with confirmed BP1) will be enrolled in the United States. Participants will be answering RMS questionnaire and accuracy will be measured against Mini-International Neuropsychiatric Interview (MINI) interview.