. Author manuscript; available in PMC: 2011 Mar 1.

Published in final edited form as: Clin Cancer Res. 2010 Feb 23;16(5):1416–1422. doi: 10.1158/1078-0432.CCR-09-2877

Table 1.

Distribution of selected variables in SCCOP patients by HPV16 status

Variable	HPV16⁺ patients (N = 147)		HPV16⁻ patients (N = 53)		P value^*
	No.	%	No.	%
Age					0.489
≤54 years	83	56.5	26	49.0
>54 years	64	43.5	27	51.0
Sex					0.193
Male	132	89.8	44	83.0
Female	15	10.2	9	17.0
Ethnicity					0.856
Non-Hispanic white	137	93.2	49	92.4
Others	10	6.8	4	7.6
Tobacco smoking					0.139
Ever	77	52.4	34	64.2
Never	70	47.6	19	35.8
Alcohol drinking					0.354
Ever	110	74.8	43	81.1
Never	37	25.2	10	18.9

Two-sided χ² test.