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Table 1 Differences in HPV infection and cervical intraepithelial lesions between healthy control subjects and FSWs analyzed by Pearson’s chi-square test

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 21.00 % 61.90 %**
ASCUS 2.70 % 32.04 %**
ASCUS-H 0.20 % 4.21 %**
CIN1 2.90 % 8.41 %*
CIN2 1.00 % 5.50 %**
CIN3 0.50 % 2.91 %**
  1. Single (*) and double (**) asterisks indicate significant differences from control subjects at P < 0.05 and at P < 0.01 respectively