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Table 1 Association (odds ratio, OR, with 95% confidence interval, CI) of low avidity HPV16 antibodies (ab) with increased risk of being seropositive for other HPV types among Finnish and Ugandan women.

From: Low avidity of human papillomavirus (HPV) type 16 antibodies is associated with increased risk of low-risk but not high-risk HPV type prevalence

Population Seropositivity Total Prevalence of low ab-avidity (%) Crude OR (95% CI)
Finland (n = 248) HPV16 only 113 19 (7.7%) 1
  HPV16 + 6 or 11 36 8 (6.3%) 1.4 (0.6-3.6)
  HPV16 + 31 or 33 59 5 (2.5%) 0.5 (0.2-1.3)
  HPV16 + 18 or 45 40 6 (2.2%) 0.9 (0.3-2.4)
Uganda (n = 117) HPV16 only 45 9 (7.7%) 1
  HPV16 + 6 or 11 32 15 (12.8%) 3.5 (1.3-9.7)
  HPV16 + 31 or 33 24 4 (3.4%) 0.8 (0.2-2.9)
  HPV16 + 18 or 45 16 2 (1.7%) 0.6 (0.1-4.0)
All (n = 365) HPV16 only 158 28 (7.7%) 1
  HPV16 + 6 or 11 68 23 (6.3%) 2.4 (1.3-4.6)
  HPV16 + 31 or 33 83 9 (2.5%) 0.6 (0.3-1.3)
  HPV16 + 18 or 45 56 8 (2.2%) 0.8 (0.3-1.8)
  1. All = combined data of Finnish and Ugandan women
  2. Cutoff_30% = using low avidity controls mean plus 3 standard deviations