Table 1:
Vaccination status, screening rates, and cytology results of the 1994–1997 birth cohort, by year of birth
| Birth year | No. (%) of screened women* | Cytology results for screened cohort;† no. (%)‡ | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
|
|
||||||||
| Total | Vaccinated§ | Unvaccinated§ | Total | Negative | ASC-US | LSIL | ASC-H | HSIL | |
| Total |
n = 84 924¶ 10 294 (12.1) |
n = 50 088 4538 (13.0)** |
n = 34 836 5756 (11.4)** |
10 204 | 8723 (85.5) | 498 (4.9) | 886 (8.7) | 62 (0.6) | 35 (0.3) |
|
| |||||||||
| 1997 |
n = 20 846 142 (0.7) |
n = 15 758 118 (0.7) |
n = 5088 24 (0.5) |
138 | 125 (90.6) | 6 (4.4) | 6 (4.4) | 6 (0.7) | 1 (0.0) |
|
| |||||||||
| 1996 |
n = 21 295 1378 (6.5) |
n = 15 535 1049 (6.8) |
n = 5760 329 (5.7) |
1364 | 1201 (88.0) | 65 (4.8) | 91 (6.7) | 6 (0.4) | 1 (0.1) |
|
| |||||||||
| 1995 |
n = 21 743 3003 (13.8) |
n = 14 572 2100 (14.4) |
n = 7171 903 (12.6) |
2972 | 2595 (87.3) | 131 (4.4) | 222 (7.5) | 20 (0.7) | 4 (0.1) |
|
| |||||||||
| 1994 |
n = 21 040 5771 (27.4) |
n = 4223 1271 (30.1) |
n = 16 817 4500 (26.8) |
5730 | 4802 (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).