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Table 5 Single and multiple infections in human papillomavirus (HPV)-positive patients in different disease groups

From: Analysis of epidemiological trends in human papillomavirus infection among gynaecological outpatients in Hangzhou, China, 2011–2015

  Cervical cancera
(n = 915)
CIN3b
(n = 324)
CIN2c
(n = 270)
CIN1d
(n = 1924)
Other diseasese
(n = 40,371)
χ2 P
HPV-positive 889 (97.2) 287 (88.6) 143 (52.7) 978 (50.8) 7455 (18.5) 4557.239 <0.001
Single infections 616 (69.3) 203(70.7) 109 (76.2) 764(78.1) 5970 (80.1) 63.613 <0.001
Multiple infections 273 (30.7) 84(29.3) 34 (23.8) 214(21.9) 1485(19.9)
  1. Pairwise comparisons were performed using the Bonferroni method; α was adjusted with P < 0.01 considered significant. In comparing the rates of single and multiple infections, the following results were found: the difference was significant for a + d (χ2 = 18.820, P < 0.001); the difference was significant for a + e (χ2 = 55.598, P < 0.001); the difference was significant b + e (χ2 = 14.978, P < 0.001)