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Table 4 Changes in the rate of human papillomavirus infection ingynaecological outpatients in different age groups, 2011–2015

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

  2011
(n = 5001)
2012
(n = 6410)
2013
(n = 7863)
2014
(n = 11,402)
2015
(n = 13,128)
χ2 P gamma value
15–24 5 (0.1) 20 (0.3) 36 (0.5) 83 (0.7) 180 (1.4) 111.4 <0.001 0.464*
>24–34 207(4.1) 273(4.3) 394(5.0) 579(5.1) 702(5.4) 16.8 <0.001 0.064*
>34–44 332(6.6) 389(6.1) 482(6.1) 723(6.3) 786(6.0) 1.159 0.282 −0.015**
>44–54 404(8.1) 441(6.9) 523(6.7) 776(6.8) 788(6.0) 20.372 <0.001 −0.031**
>54 185(3.7) 260(4.1) 310(3.9) 414(3.6) 460(3.5) 2.587 0.108 −0.032**
  1. Linear-by-linear Association test and Gamma Value for trend to evaluate changes in HPV prevalence by calendar year and by age group. *p < 0.05;**p > 0.05