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PCOS affects between 5% and 10% of women ages 18 to 44.
References:
Trivax, B., & Azziz, R. (2007). Diagnosis of polycystic ovary syndrome. Clinical Obstetrics and Gynecology, 50, 168–177. [top]
NICHD, NIH, DHHS. (2008). Beyond infertility: Polycystic ovary syndrome (PCOS) (08-5863). Washington, DC: U.S. Government Printing Office.[top]