Table 1. The Overall Prevalence of HPV in different age groups.

	Age group(year)								Total
	≦25	26–30	31–35	36–40	41–45	46–50	51–55	≧56
HPV Positive (n)	543	613	649	689	549	408	119	111	3681
single infection	404	498	551	572	456	348	101	87	3017
multiple infection	139	115	98	117	93	60	18	24	664
HPV Negative (n)	2616	3954	4464	5340	4004	2851	920	627	24776
Total	3159	4567	5113	6029	4553	3259	1039	738	28457

Note: All genotypes from single and multiple infections were computed individually.