title: Diurnal variation in occurrence of strokes.
abstract: The time of onset of a completed stroke was recorded in 707 patients. Of the 554 cerebral infarctions 40% occurred between midnight and 6 a.m. Onset at night was, if anything, less common among the 153 cases of cerebral hemorrhage.
mesh_terms: D001794:Blood Pressure; D002543:Cerebral Hemorrhage / Q000150:complications; D002561:Cerebrovascular Disorders / Q000209:etiology / Q000517:prevention & control; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000150:complications; D008297:Male