From: Prevalence of polycystic ovary syndrome under NIH criteria among the tenth-grade Chinese schoolgirls in Guangzhou area: a cross-sectional epidemiological survey
15-year-old
16-year-old
17-year-old
NIH-PCOS girls (n)
13
22
3
Non-PCOS girls (n)
331
555
74
NIH-PCOS prevalence (%)
3.78
3.81
3.9