From: Human papillomavirus infection and cervical dysplasia in female sex workers in Northeast China: an observational study
Controls (n = 1000)
Sex workers (n = 309)
HPV infection
21.00Â %
61.90Â %**
ASCUS
2.70Â %
32.04Â %**
ASCUS-H
0.20Â %
4.21Â %**
CIN1
2.90Â %
8.41Â %*
CIN2
1.00Â %
5.50Â %**
CIN3
0.50Â %
2.91Â %**