Article
Genetic association of daytime sleepiness and depressive symptoms in elderly men.
Sleep - 1 Aug 2008
Lessov-Schlaggar Christina N, Bliwise Donald L, Krasnow Ruth E, Swan Gary E, Reed Terry
Abstract excerpt
STUDY OBJECTIVES: Clinical rating scales, self-reports, and diagnostic instruments measuring depression often inquire about daytime fatigue and tiredness. Excessive daytime sleepiness refers specifically to the tendency to feel drowsy or fall asleep during waking hours and is considered conceptually and operationally independent from the fatigue, tiredness, and sleeping difficulties that characterize depression....
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