Table 3.

Incidence of HPV infection stratified by anatomical site among 966 uncircumcised men in Kisumu, Kenya

HPV type	Incident HPV infections in glans (n)	IR (95%CI)*	Incident HPV infections in shaft (n)	IR (95% CI)*	HR (95% CI)
Any HPV	215	44.4 (38.4 to 50.4)	184	21.6 (18.6 to 25.0)	2.1 (1.7 to 2.4)
High-risk HPV†	173	27.3 (23.4 to 31.7)	121	13.1 (10.9 to 15.6)	2.1 (1.7 to 2.6)
Low-risk HPV†	167	18.8 (16.0 to 21.9)	81	7.8 (6.2 to 9.7)	2.4 (1.9 to 3.1)
Multiple	164	21.6 (18.4 to 25.2)	79	7.5 (6.0 to 9.4)	2.9 (2.3 to 3.6)
HPV16	88	8.6 (6.9 to 10.6)	48	4.4 (3.2 to 5.8)	2.0 (1.4 to 2.7)
HPV18	35	3.1 (2.2 to 4.4)	17	1.5 (0.9 to 2.4)	2.1 (1.4 to 3.3)

^*IR=incidence per 1000 person-months.

^†Infections with multiple HPV types were considered high-risk if one or more high-risk HPV types were detected: HPV16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66 and 68. All other multiple infections were considered low-risk if they did not include HPV-X.

HPV, human papillomavirus; IR, incidence rate.