Table 4. No. (%) of cases and controls positive for HPV 16 and HPV 18 along with results from logistic regression analysis.
Cases HPV+ | Controls HPV+ |
ORa (95% CI)
|
||
---|---|---|---|---|
Age group at baseline | N (%) | N (%) | Model 1b | Model 2c |
HPV 16 | ||||
Under 20 | 9 (9.3) | 5 (5.0) | 2.25 (0.71–7.13) | 2.10 (0.61–7.30) |
20–39 | 39 (14.6) | 10 (3.8) | 4.62 (2.24–9.51) | 4.15 (1.99–8.64) |
40 or over | 22 (11.0) | 3 (1.4) | 8.95 (2.63–30.4) | 9.08 (2.65–31.1) |
All ages | 70 (12.4) | 18 (3.1) | 4.48 (2.61–7.55) | 4.18 (2.44–7.18) |
HPV 18 | ||||
Under 20 | 3 (3.1) | 3 (3.0) | 1.12 (0.22–5.78) | 0.85 (0.15–4.95) |
20–39 | 12 (4.6) | 6 (2.3) | 2.02 (0.74–5.49) | 2.15 (0.72–6.44) |
40 or over | 12 (6.0) | 8 (3.6) | 1.69 (0.68–4.23) | 1.30 (0.49–3.48) |
All ages | 27 (4.8) | 17 (2.9) | 1.72 (0.93–3.20) | 1.48 (0.77–2.86) |
HPV=human papillomavirus; OR=odds ratio; CI=confidence interval.
For cases vs controls (logistic regression).
Adjusted for age in years.
Adjusted for age in years, infection with other specific HPV type (16 or 18) and infection with unknown HPV type (positive using GP5+/6+ primers but negative for HPV 16/18).