Table 2. Status of HPV infection and viral type.

Viral type	Age (years)
	≤ 20	21–35	36–51	52–66	≥ 67	Total
HPV negative	17	142	95	31	10	295
HPV overall	9	22	15	10	2	58
HPV-16	1	5	1	1	–	8
HPV-18	2	2	1	–	–	5
HPV-16 and HPV-18	–	1	–	–	–	1

Abbreviations: HPV, human papillomavirus; HPV-16, human papillomavirus type 16; HPV-18, human papillomavirus type 18.