Table 1.

Patients’ and tumor characteristics according by race (African Americans vs. other)

Characteristics	Characteristics	Other races		African American		P-values
		No. of subjects	%	No. of subjects	%
Age	20–44 yrs	26	11.6	17	10.6
	45–54 yrs	66	29.5	56	34.8
	55–64 yrs	70	31.3	54	33.5
	65+ yrs	62	27.7	34	21.1	0.4406
Gender	Female	72	32.1	42	26.1
	Male	152	67.9	119	73.9	0.1992
Marital Status	Not-married	113	50.5	111	68.9
	Married	111	49.6	50	31.1	0.0003
Primary sites	Other sites	179	79.9	125	77.6
	Oro-pharynx*	45	20.1	36	22.4	0.5897
Tumor stage	Local	54	24.1	45	28.0
	Regional	122	54.5	80	49.7
	Distant	48	21.4	36	22.4	0.6119
Tumor differentiation	Well-Moderate	111	49.6	78	48.5
	Poor- Non	113	50.5	83	51.6	0.8304
Multiple primaries	Absence	137	61.2	104	64.6
	Presence	87	38.8	57	35.4	0.492
Cigarette smoking	Never	23	10.3	13	8.1
	Past	67	29.9	39	24.2
	Current	124	55.4	103	64.0
	Ever unspecified	1	0.5	2	1.2
	Unknown	9	4.0	4	2.5	0.3827
	Not smoking	90	40.2	52	32.3
	Currently smoking	124	55.4	103	64.0
	Unknown	10	4.5	6	3.7	0.237
Alcohol use	Never	60	26.8	28	17.4
	Past	50	22.3	35	21.7
	Current	101	45.1	91	56.5
	Ever unspecified	1	0.5	2	1.2
	Unknown	12	5.4	5	3.1	0.0944
	Never	60	26.8	28	17.4
	Ever	152	67.9	128	79.5
	Unknown	12	5.4	5	3.1	0.04

^*Oro-pharynx was defined by ICD-O 4 digit topology codes; C019–C020 (base and dorsal surface of tongue), C051 (soft palate)-C052