Table 2:
Cumulative risk of outcomes, according to eligibility for Ontario’s quadrivalent human papillomavirus vaccination program and birth year
| Clinical indicator of sexual behaviour | Program eligibility; birth year; no. (%) of participants | Total (n = 260 493) | |||
|---|---|---|---|---|---|
|
| |||||
| Ineligible | Eligible | ||||
|
|
|
||||
| 1992 (n = 66 653) | 1993 (n = 65 128) | 1994 (n = 64 818) | 1995 (n = 63 894) | ||
| Composite outcome | 4 203 (6.3) | 4 032 (6.2) | 3 801 (5.9) | 3 405 (5.3) | 15 441* (5.9) |
|
| |||||
| Pregnancy | 2 854 (4.3) | 2 658 (4.1) | 2 476 (3.8) | 2 199 (3.4) | 10 187 (3.9) |
|
| |||||
| STIs | 1 609 (2.4) | 1 653 (2.5) | 1 541 (2.4) | 1 456 (2.3) | 6 259 (2.4) |
STI = sexually transmitted infection.
*
This number is smaller than the sum of the 2 subsequent rows (for pregnant participants and those with STIs not related to human papillomavirus) because some cohort members had both outcomes.