Table 1:

Vaccination status, screening rates, and cytology results of the 1994–1997 birth cohort, by year of birth

Birth yearNo. (%) of screened women*Cytology results for screened cohort; no. (%)
TotalVaccinated§Unvaccinated§TotalNegativeASC-USLSILASC-HHSIL
Totaln = 84 924
10 294 (12.1)
n = 50 088
4538 (13.0)**
n = 34 836
5756 (11.4)**
10 2048723 (85.5)498 (4.9)886 (8.7)62 (0.6)35 (0.3)
1997n = 20 846
142 (0.7)
n = 15 758
118 (0.7)
n = 5088
24 (0.5)
138125 (90.6)6 (4.4)6 (4.4)6 (0.7)1 (0.0)
1996n = 21 295
1378 (6.5)
n = 15 535
1049 (6.8)
n = 5760
329 (5.7)
13641201 (88.0)65 (4.8)91 (6.7)6 (0.4)1 (0.1)
1995n = 21 743
3003 (13.8)
n = 14 572
2100 (14.4)
n = 7171
903 (12.6)
29722595 (87.3)131 (4.4)222 (7.5)20 (0.7)4 (0.1)
1994n = 21 040
5771 (27.4)
n = 4223
1271 (30.1)
n = 16 817
4500 (26.8)
57304802 (83.8)296 (5.2)567 (9.9)35 (0.6)30 (0.5)
  • Note: ASC-H = atypical squamous cells, cannot rule out a high-grade lesion, ASC-US = atypical squamous cells of undetermined significance, HSIL = high-grade squamous intraepithelial lesion, LSIL = low-grade squamous intraepithelial lesion.

  • * Screened: had at least 1 Pap test at age ≥ 18 yr between Jan. 1, 2012, and Aug. 14, 2015.

  • Excludes women who had only unsatisfactory Pap test results (i.e., problem with collection and or examination of cells).

  • Number of women with case status/total number of women in the case–control study, by birth year.

  • § ”Vaccinated”: had at least 1 dose of HPV vaccine administered or dispensed before their Pap test with the worst result between Jan. 1, 2012, and Aug. 14, 2015; the remainder are “Unvaccinated.”

  • Birth cohort of 91 273, excluding nonresidents and First Nations/Inuit.

  • ** Weighted rate (adjusted for birth year).