Table 3.

Overall and age-stratified relative risk (RR) for CIN3+ versus ≤CIN2 by HPV cofactors, among HR-HPV–positive women, from adjusted log-binomial regression models

 All ages (n = 812)Age <30 (n = 556)Age ≥30 (n = 256)
RR95% CIRR95% CIRR95% CI
Age
 18–211.01.0
 22–241.30.8–2.41.40.8–2.5
 25–292.11.3–3.42.41.4–4.0
 30–392.31.4–3.81.0
 ≥ 401.71.0–3.00.70.5–1.7
Smoking
 Current1.51.1–2.11.61.0–2.51.51.0–2.4
 Former1.81.2–2.51.30.7–2.51.91.3–3.0
 Never1.01.01.0
Screening history
 5 or more pap tests in last 5 years0.70.6–0.90.80.5–1.10.70.5–1.0
 Less than 5 pap tests in last 5 years1.01.01.0
Parity
 01.01.01.0
 1–21.00.7–1.51.10.7–1.70.90.5–1.7
 3–41.20.8–1.80.70.3–1.51.40.8–2.5
 ≥51.61.0–2.50.90.3–1.51.81.0–3.3
 PtrendP = 0.07P = 0.55P = 0.008
Currently use condoms
 Never1.01.01.0
 Sometimes0.80.6–1.10.90.6–1.40.60.2–1.4
 Regularly0.50.3–0.90.60.3–1.10.60.3–1.1