Table 2. Overall antibody seroprevalences of seven hr-HPV serotypes of individuals older than 15 years of age in the 1995 and 2006–07 survey.

	1995–96		2006–07
	%	(95%CI)	%	(95%CI)	p-value
Clade α9
HPV16	6.6	(5.5–7.6)	11.5	(10.4–12.5)	<0.0001
HPV31	1.3	(0.7–1.8)	3.0	(2.3–3.6)	<0.0001
HPV33	5.5	(4.4–6.5)	6.3	(5.5–7.1)	0.205
HPV52	6.9	(5.8–8.0)	6.3	(5.6–6.9)	0.330
HPV58	4.3	(3.2–5.4)	4.1	(3.5–4.8)	0.768
Clade α7
HPV18	4.8	(3.7–5.8)	6.4	(5.6–7.2)	0.015
HPV45	5.0	(3.8–6.2)	7.2	(6.2–8.2)	0.006

Note: 1995–96 survey n = 2188, 2006–07 survey n = 4334.