Table 4.

Prevalence of HPV infection in different age groups

	Outpatient Women		Healthy Women
Age groups	n (postive/total)	Prevalence rate (95% CI)	n (postive/total)	Prevalence rate (95% CI)
< 20	164/447	36.7(32.2–41.2)	0/0	0
20–29	1733/9886	17.5(6.8–18.3)	327/3098	10.6 (9.5–11.6)
30–39	2325/13671	17.0(16.4–17.6)	822/8293	9.9 (9.3–10.6)
40–49	2468/12339	20.0(19.3–20.7)	522/4819	10.8(10.0–11.7)
50–59	1032/5524	18.7(17.7–19.7)	332/2684	12.4 (11.1–13.6)
≥60	359/1401	25.6(23.3–27.9)	107/983	10.9 (8.9–12.8)
P	0		0.01