Table 2.

Prevalence of human papillomavirus at study start by age

	Age (years)
	25–33	34–69	Total
N	3277	7943	11 220
HPV status	Per cent	Per cent	Per cent
HPV-negative	92.9	97.9	96.4
HPV31/33/45 (not 16, not 18)	2.6	0.8	1.4
HPV18 (not 16)	1.0	0.3	0.5
HPV16	3.4	1.0	1.7