Table 2. Detection of cervical HPV any type, high-risk types and low-risk types according to age and the presence of cervical abnormalities among 662 women. Shanxi Province, China, 2004.

		HPV positive
		Any			High riska			Low riskb
	Total no.	No.	%	OR (95% CI)c	No.	%	OR (95% CI)c	No.	%	OR (95% CI)c
Age (years)
15–24	45	6	13.3	1.9 (0.7–5.3)	5	11.1	1.7 (0.6–5.0)	1	2.2	1.3 (0.1–12.7)
25–34d	173	13	7.5	1	12	6.9	1	3	1.7	1
35–44	176	36	20.5	3.2 (1.6–6.2)	30	17.1	2.8 (1.4–5.6)	7	4.0	2.3 (0.6–9.2)
45–54	177	30	17.0	2.5 (1.3–5.0)	25	14.1	2.2 (1.1–4.5)	7	4.0	2.3 (0.6–9.2)
55–59	91	13	14.3	2.1 (0.9–4.6)	9	9.9	1.5 (0.6–3.6)	7	7.7	4.7 (1.2–18.7)
p for trend				=0.11			=0.34			=0.03
Presence of cervical abnormalities
Normald	594	57	9.6	1	44	7.4	1	16	2.7	1
CIN1	39	18	46.2	7.6 (3.7–15.4)	16	41.0	8.6 (4.1–18.0)	6	15.4	5.5 (2.0–15.5)
CIN2	16	11	68.8	22.0 (7.2–67.4)	9	56.3	16.8 (5.8–48.4)	3	18.8	8.8 (2.2–35.1)
CIN3 and worse	13	12	92.3	102 (12.8–803)	12	92.3	136 (17.2–1082)	0	0	0 (0–11.4)
p for trend				<0.001			<0.001			=0.007

^aIncludes that in multiple infections with low-risk types.

^bIncludes that in multiple infections with high-risk types.

^cAdjusted for age (10-year groups);

^dReference category. OR=odds ratio; CI=confidence interval; CIN=cervical intraepithelial neoplasia.