Table 4:

Adjusted odds of cervical abnormalities (worst cytology result),* by vaccination status

DoseAbnormalLow gradeHigh grade**High grade**††
Crude OR (95% CI)Adjusted OR§ (95% CI)Crude OR (95% CI)Adjusted OR§ (95% CI)Crude OR (95% CI)Adjusted OR§ (95% CI)Crude OR (95% CI)Adjusted OR§ (95% CI)
011111111
10.88 (0.64–1.20)0.86 (0.62–1.18)0.91 (0.66–1.26)0.9 (0.64–1.24)0.48 (0.12–1.95)0.45 (0.11–1.83)0.48 (0.12–1.97)0.45 (0.11–1.87)
21.07 (0.83–1.36)1.08 (0.84–1.38)1.14 (0.89–1.46)1.15 (0.90–1.49)0.16 (0.02–1.18)0.17 (0.02–1.20)0.16 (0.02–1.16)0.16 (0.02–1.17)
≥ 10.75 (0.67–0.84)0.78 (0.69–0.87)0.78 (0.69–0.87)0.81 (0.71–0.92)0.42 (0.27–0.67)0.45 (0.27–0.73)0.44 (0.28–0.69)0.46 (0.28–0.75)
≥ 30.70 (0.62–0.79)0.72 (0.63–0.82)0.72 (0.62–0.82)0.74 (0.64–0.85)0.45 (0.28–0.73)0.48 (0.28–0.81)0.47 (0.29–0.76)0.50 (0.30–0.85)
  • Note: ASC-H = atypical squamous cells, cannot rule out a high-grade lesion, ASC-US = atypical squamous cells of undetermined significance, CI = confidence interval, HSIL = high-grade squamous intraepithelial lesion, LSIL = low-grade squamous intraepithelial lesion, OR = odds ratio.

  • * Cytology with worst result between Jan. 1, 2012, and Aug. 14, 2015.

  • Control: negative cytology result.

  • Abnormal: ASC-US, LSIL, ASC-H or HSIL.

  • § Adjusted for age, income, rural/urban residency and laboratory site.

  • Low grade: ASC-US or LSIL.

  • ** High grade: ASC-H or HSIL.

  • †† Control: negative and low-grade (ASC-US, LSIL) results.