Table 3.

Overall and age-stratified Relative Risks (RR) for CIN3+ vs. ≤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)
	RR	95% CI	RR	95% CI	RR	95% CI
Age
18–21	1.0		1.0
22–24	1.3	0.8, 2.4	1.4	0.8, 2.5
25–29	2.1	1.3, 3.4	2.4	1.4, 4.0
30–39	2.3	1.4, 3.8			1.0
>=40	1.7	1.0, 3.0			0.7	0.5, 1.7
Smoking
Current	1.5	1.1, 2.1	1.6	1.0, 2.5	1.5	1.0, 2.4
Former	1.8	1.2, 2.5	1.3	0.7, 2.5	1.9	1.3, 3.0
Never	1.0		1.0		1.0
Screening history
5 or more pap tests in last 5 years	0.7	0.6, 0.9	0.8	0.5, 1.1	0.7	0.5, 1.0
Less than 5 pap tests in last 5 years	1.0		1.0		1.0
Parity
0	1.0		1.0		1.0
1 to 2	1.0	0.7, 1.5	1.1	0.7, 1.7	0.9	0.5, 1.7
3 to 4	1.2	0.8, 1.8	0.7	0.3, 1.5	1.4	0.8, 2.5
≥5	1.6	1.0, 2.5	0.9	0.3, 1.5	1.8	1.0, 3.3
P-value for trend	p=.07		p=.55		p=.008
Currently use condoms
Never	1.0		1.0		1.0
Sometimes	0.8	0.6, 1.1	0.9	0.6, 1.4	0.6	0.2, 1.4
Regularly	0.5	0.3, 0.9	0.6	0.3, 1.1	0.6	0.3, 1.1