Reading focus
Syllabus: What Explains Mood Episodes in Bipolar Disorder?
Consider how the outcome changes when observation includes lesser symptoms.
Why you’re reading it. Make course an explicit target for explanation.
A question to consider. What would an episode-only measure miss?
Why this reading
Counting major episodes can miss difficulties between them. Judd and colleagues examine symptom severity and polarity across long follow-up, making the choice of outcome consequential.
Before you read
Subthreshold symptoms fall below an episode definition. “Natural history” here means observation during ordinary care, not an untreated course. Weekly ratings were reconstructed at periodic interviews.
Read for
- Compare episode counts with time spent at different symptom levels.
- Inspect recruitment, recall intervals, missing information, and variation between participants.
Consider afterwards
- Could two people have the same episode count but very different burdens over time? Design a measure that distinguishes them.
Editorial context
The 146 participants were White, English-speaking patients recruited through five academic centers; most entered as inpatients. Depression and lesser symptoms occupied substantial follow-up time. This selected, treated cohort cannot establish an inevitable course for everyone with bipolar I, and its averages are not individual forecasts.