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Table 2 Age-specific distribution of HPV infection

From: Prevalence and genotype distribution of HPV infection among 214,715 women from Southern China, 2012–2018: baseline measures prior to mass HPV vaccination

  Age, years (n, %) P
< 21 (n = 2111) 21–30 (n = 45,211) 31–40 (n = 70,681) 41–50 (n = 68,488) 51–60 (n = 22,142) > 60 (n = 6082) Total
HPV positive numbers 699 (33.11) 9073 (20.07) 12,223 (17.29) 11,801 (17.23) 4794 (21.65) 1578 (25.95) 40,168 (18.71) < 0.001
Number of co-infections
 single HPV genotype 411 (19.47) 6818 (15.08) 9795 (13.86) 9464 (13.82) 3519 (15.89) 1041 (17.12) 31,048 (14.16) < 0.001
 double HPV genotypes 167 (7.91) 1671 (3.70) 1957 (2.77) 1882 (2.75) 906 (4.09) 343 (5.64) 6926 (3.23)
 triple HPV genotypes 74 (3.51) 438 (0.97) 349 (0.49) 350 (0.51) 257 (1.16) 121 (1.99) 1589 (0.74)
 Quadruple HPV genotypes 32 (1.52) 108 (0.24) 90 (0.13) 78 (0.11) 74 (0.33) 45 (0.74) 427 (0.20)
 ≥ five HPV genotypes 15 (0.71) 38 (0.08) 32 (0.05) 27 (0.04) 38 (0.17) 28 (0.46) 178 (0.08)
HPV genotype
 HR-HPV only 423 (20.04) 7122 (15.75) 10,146 (14.35) 9742 (14.22) 3881 (17.53) 1259 (20.70) 32,573 (15.17) < 0.001
 LR-HPV only 114 (5.40) 1123 (2.48) 1309 (1.85) 1293 (1.89) 484 (2.19) 125 (2.06) 4448 (2.07)
 mixed LR- and HR-HPV 162 (7.67) 828 (1.83) 768 (1.09) 766 (1.12) 429 (1.94) 194 (3.19) 3147 (1.47)
  1. HPV Human papillomavirus, HR-HPV High-risk HPV, LR-HPV, Low-risk HPV, CI Confidence interval