Table 1.

Prevalence of Adult Female Acne

STUDY TYPE	NUMBER OF SUBJECTS, AGE, AND GENDER	PREVALENCE
Large-scale epidemiology survey (Yentzer et al)	Claims database representative of 9.6 million patients male and female (all age ranges)	Two-thirds (65.2%) of visits made by females Older patients (>18y) comprised 61.9% patients with acne Depression more common in females (10.6% versus 5.3% in men)
Community-based clinical examination (Gouldon et al)	749 subjects male and female (>25 years)	Clinical grade acne seen in 12% of women and 3% of men. Acne prevalence presists until after 44 years
University campus and medical complex (Collier et al)	1,103 subjects male and female (20+ years)	73.3% suffered acne at some stage Age 20–29y: 50.9% women and 42.5% men Age 30–39y: 35.2% women and 20.1% men Age 40–49y: 26.3% women and 12.0% men Age 50y and older: 15.3% women and 7.3% men
General population survey (Stern)	20,749 residents male and female (15-44 years)	Active acne in 27% of women and 34% of men
General population survey (Perkins et al)	2,895 female only (10–70 years) US (photo study)	55% had some form of acne (27% clinical acne) Age 21–30y: 45% women had clinical acne Age 31–40y: 26% women had clinical acne Age 41–50y: 12% women had clinical acne
General population survey (Poli et al)	3,305 female only (25-40 years) France	41% of women with high proportion of late-onset acne (41%). Stress main cause of acne