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The Sex-Polarity Effect in Affectively Ill Family Members

George Winokur, MD; Raymond R. Crowe, MD

Arch Gen Psychiatry. 1983;40(1):57-58.

Abstract
• We examined the sex ratios of unipolar and bipolar affective disorder in 14 studies of bipolar illness. The data are highly consistent in demonstrating that (1) females are more frequently affected than males; (2) among affected females, the ratio of unipolar depression to bipolar illness is about 2:1; whereas (3) among affected males, the ratio of bipolar to unipolar illness is approximately 1:1. This curious discrepancy between the sexes may hold a clue to understanding familial transmission as well as heterogeneity in bipolar illness.

Author Affiliations
From the Department of Psychiatry, University of Iowa College of Medicine, Iowa City.

Footnotes
Accepted for publication March 26, 1982.

Reprints not available.

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