What are the racial predilections of sleep-wake disorders?

Updated: Aug 21, 2019
  • Author: Roy H Lubit, MD, PhD; Chief Editor: Ana Hategan, MD, FRCPC  more...
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Primary insomnia is more common in women, with a female-to-male ratio of 3:2. Hormonal variations during the menstrual cycle or during menopause may cause disruptions in sleep. Obstructive sleep apnea (OSA) is more common in men (4%) than in women (2.5%).

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