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.

Inclusion Criteria:

• Presenting to provider with primary complaint of new or continuing depressive symptoms.

• May be treatment naïve even if not in their first depressive episode.

• Meets one of the following criteria:

  • Previously treated and currently off medication.
  • Currently using an antidepressant, atypical antipsychotic for mood disorder, or mood stabilizer.

Exclusion Criteria:

• Hospitalized or admitted to the emergency room due to mental health issues in the past 30 days.
• Currently experiencing a manic episode.
• History of schizophrenia or depression due to another psychotic disorder or a medical, organic, or drug-induced cause or a neurocognitive disorder (dementia/delirium) (as defined by Diagnostic and Statistical Manual of Mental Disorders [DSM-V] criteria).
• Participant did not provide informed consent.

Adult participants with Bipolar 1 Disorder or Unipolar Major Depressive Disorder