Characteristics of female participants in the BC Adolescent Health Survey, by years 2003, 2008 and 2013
| Characteristic | % (95% CI) of participants who identified as heterosexual* n = 302 626 | ||
|---|---|---|---|
| 2003† | 2008† | 2013‡ | |
| Total population weighted estimate,§ n (% ) | 123 166 (40.7) | 99 925 (33.0) | 79 535 (26.3) |
| Age, mean ± SD; yr | 14.87 (14.80–14.93) | 14.98 (14.94–15.03) | 14.89 (14.85–14.93) |
| School grade, mean ± SD | 9.45 (9.39–9.51) | 9.66 (9.60–9.73) | 9.62 (9.58–9.66) |
| Residence area | |||
| Urban | 86.9 (85.6–88.1) | 86.6 (85.0–88.1) | 88.0 (86.3–89.6) |
| Rural | 13.1 (11.9–14.4) | 13.4 (11.9–15.0) | 12.0 (10.4–13.7) |
| Born in Canada | |||
| Yes | 82.0 (80.1–83.7) | 81.5 (80.3–82.6) | 81.3 (80.1–82.4) |
| No | 18.0 (16.3–19.9) | 18.5 (17.4–19.7) | 18.7 (17.6–19.9) |
Note: CI = confidence interval, HPV = human papillomavirus, SD = standard deviation.
↵* Unless stated otherwise.
↵† Survey years before implementation of the school-based HPV vaccination program in British Columbia.
↵‡ Survey year after implementation of the school-based HPV vaccination program in BC. All girls surveyed would have had the opportunity to receive the HPV vaccine.
↵§ Weighted and scaled sample represents this population of adolescent girls in BC who were heterosexual.