Table 4. Median duration of HPV Infection by smoking status among men in the HIM Study.

HPV Status	Smoking Status1	Median Duration of Infection (Months)				p Value2
		Overall	Current Smokers	Former Smokers	Never Smokers
Any HPV	Baseline	6.8 (6.6 – 7.0)	7.4 (6.9 – 8.2)	6.5 (6.3 – 6.9)	6.7 (6.5 – 7.0)	0.023
Any HPV	Baseline & last follow-up	6.7 (6.5 – 6.9)	7.2 (6.7 – 7.9)	6.6 (6.3 – 6.9)	6.6 (6.4 – 6.9)	0.109
Non-oncogenic	Baseline	6.9 (6.6 – 7.2)	7.6 (6.9 – 8.5)	6.7 (6.4 – 7.1)	6.8 (6.5 – 7.1)	0.033
Non-oncogenic	Baseline & last follow-up	6.8 (6.6 – 7.1)	7.3 (6.8 – 8.4)	6.7 (6.3 – 7.1)	6.7 (6.5 – 7.2)	0.154
Oncogenic	Baseline	6.6 (6.4 – 6.9)	7.4 (6.6 – 8.1)	6.4 (6.2 – 6.8)	6.5 (6.3 – 6.9)	0.335
Oncogenic	Baseline & last follow-up	6.5 (6.4 – 6.7)	7.1 (6.4 – 8.0)	6.4 (6.2 – 6.9)	6.5 (6.3 – 6.7)	0.551
HPV6	Baseline	6.4 (6.2 – 6.8)	6.2 (6.1 – 10.5)	6.4 (6.0 – 10.6)	6.3 (6.1 – 6.8)	0.348
HPV6	Baseline & last follow-up	6.3 (6.1 – 6.8)	6.2 (6.0 – 11.9)	6.4 (5.9 – 12.2)	6.3 (6.1 – 6.8)	0.368
HPV11	Baseline	6.9 (6.2 – 11.8)	11.8 (5.7 – 18.0)	6.2 (5.8 – 18.1)	7.1 (6.2 – 11.8)	0.884
HPV11	Baseline & last follow-up	6.6 (6.0 – 8.5)	11.8 (5.7 – 17.1)	6.3 (5.9 – 18.1)	6.6 (6.0 – 8.5)	0.981
HPV16	Baseline	7.4 (6.5 – 10.3)	8.0 (6.3 – 14.0)	7.2 (6.1 – 12.2)	7.8 (6.5 – 11.5)	0.769
HPV16	Baseline & last follow-up	7.4 (6.4 – 10.3)	7.8 (6.3 – 14.7)	7.2 (6.0 – 12.2)	7.8 (6.3 – 11.9)	0.706
HPV18	Baseline	6.4 (6.2 – 6.9)	6.5 (6.2 – 11.2)	6.6 (5.9 – 7.0)	6.2 (6.0 – 7.8)	0.849
HPV18	Baseline & last follow-up	6.4 (6.2 – 6.9)	6.4 (6.1 – 11.2)	6.6 (5.9 – 7.0)	6.2 (6.0 – 7.8)	0.992

¹Smoking status was analyzed by two different approaches: 1) among baseline only status and 2) among men who reported the same smoking status at both the baseline and their last follow-up (LFU)

²p-value of the univariate Cox model with the robust covariance matrix estimator for HPV clearance across entire follow-up period by smoking status