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Table 4 Age-specific prevalence of grouped HPV types by histology grade

From: Pre-vaccination type-specific HPV prevalence in confirmed cervical high grade lesions in the Māori and non-Māori populations in New Zealand

   CIN 2 (N = 229) CIN 3 (N = 189) CIN 2/3 combined (N = 418)
   Māori Non-Māori X2 testb Māori Non-Māori X2 testb Māori Non-Māori X2 testb
HR HPV Age group Na % (95 % CI) Na % (95 % CI) P value Na % (95 % CI) Na % (95 % CI) P value Na % (95 % CI) Na % (95 % CI) P value
HPV 16 (any) 20–29 43 49 (33–65) 67 55 (43–67) 0.51 34 62 (44–78) 58 71 (57–82) 0.38 77 55 (43–66) 125 62 (53–71) 0.27
  30–39 21 52 (30–74) 54 48 (34–62) 0.74 27 52 (32–71) 41 56 (40–72) 0.73 48 52 (37–67) 95 52 (41–62) 0.95
  40–69 16 63 (35–85) 28 43 (24–63) 0.21 8 50 (16–84) 21 33 (15–57) 0.41 24 58 (37–78) 49 39 (25–54) 0.11
  Test for trend c P = 0.37 P = 0.26 P = 0.56 P = 0.01 P = 0.75 P = 0.01
HPV 16 and/or 20–29 43 51 (35–67) 67 63 (50–74) 0.49 34 65 (46–80) 58 79 (67–89) 0.12 77 57 (45–68) 125 70 (62–78) 0.16
18 (any) 30–39 21 62 (38–82) 54 57 (43–71) 0.05 27 63 (42–81) 41 59 (42–74) 0.88 48 63 (47–76) 95 58 (47–68) 0.21
  40–69 16 75 (48–93) 28 46 (28–66) 0.17 8 75 (35–97) 21 52 (30–74) 0.46 24 75 (53–90) 49 49 (34–64) 0.08
  Test for trend c P = 0.09 P = 0.17 P = 0.51 P = 0.05 P = 0.09 P = 0.02
OHR without 20–29 43 47 (31–62) 67 34 (23–47) 0.40 34 35 (20–54) 58 21 (11–33) 0.12 77 42 (30–53) 125 28 (20–37) 0.12
HPV 16/18 30–39 21 29 (11–52) 54 43 (29–57) 0.05 27 26 (11–46) 41 32 (18–48) 0.88 48 27 (15–42) 95 38 (28–48) 0.21
  40–69 16 25 (7–52) 28 50 (31–69) 0.17 8 25 (3–65) 21 33 (15–57) 0.55 24 25 (10–47) 49 43 (29–58) 0.11
  Test for trend c P = 0.09 P = 0.12 P = 0.51 P = 0.1 P = 0.09 P = 0.02
  1. HR high risk, OHR Other high risk, excluding HPV 16 or 18; any – regardless of co-infection with other HPV types
  2. HR HPV includes infection with either type 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59 or 68
  3. aTotal number of women at each age group by ethnicity (i.e., including women HPV negative)
  4. bChi-square test for difference between Māori and non-Māori women in the age-specific prevalence of grouped HPV types
  5. cTest for trend across each level of age group