How to Evaluate Acne in Reproductive-Age Women: An Epidemiological Study in Chinese Communities

Table 1

The women’s menstrual cycle in the acne and nonacne group.

Group	≤21days	21-35 days	≥35days
	%(n)	%(n)	% (n)
Acne group	6.3% (22)	76.1% (264)	17.6% (61)
Non-acne group	5.7% (40)	85.7% (596)	8.6% (60)

Data are shown as rates and were analyzed by χ² test. P<0.05.