A Retrospective Examination of Sleep Disturbance across the Course of XXXX .

@entity1 @entity162 @entity308 @entity2147 @entity25 @entity22
BACKGROUND: @entity25 is a prevalent and clinically significant feature of @entity162 . However, there are aspects of @entity162 that have been minimally characterized. This study aims to fill several gaps in the literature by examining the prevalence, coexistence, and persistence of @entity25 retrospectively across a five-year period in @entity162 . METHODS: Fifty-one @entity1 with @entity162 I and comorbid @entity22 who were currently inter-episode completed the NIMH Retrospective Life-Charting Methodology (the life chart). The life chart was used to document the prevalence, coexistence, and persistence of @entity22 , @entity2147 , delayed sleep phase, reduced sleep need, and irregular sleep patterns across the course of five years. RESULTS: Across the five year period, @entity162 months were primarily characterized by reduced sleep need (62.8%) and @entity22 (38.1%), @entity308 by @entity2147 (56.0%) and @entity22 (51.9%), mixed months by all five types of @entity25 , and inter-episode months by @entity22 (67.4%). There was coexistence in the types of @entity25 experienced. Further, each type of @entity25 demonstrated persistence across the five years, with persistence rates being the highest for @entity22 (49.0-58.8%). CONCLUSIONS: @entity25 is a prevalent and complex feature across mood episodes and inter-episode periods of @entity162 . Further, there is variation in the types of @entity25 experienced.
