Table 1.

Clinical and socio-demographic characteristics

	Total	Black	Non-Latino Whites
Total n	496	248	248
Sex n (%)
Female	122	74 (29.8)	48 (19.4)
Male	374	174 (70.2)	200 (80.6)
Age n (%)
Median (y)		59.6	58.4
<40y	24	12 (4.8)	12 (4.8)
40–55y	152	74 (29.8)	78 (31.5)
>55y	318	160 (64.5)	158 (63.7)
Site n (%)
Oral Cavity (%)	124 (25)	64 (25.8)	60 (25)
Oropharynx (%)	152 (30.6)	72 (29)	80 (32.3)
Nasopharynx (%)	6 (1.2)	2 (0.8)	4 (1.6)
Hypopharynx (%)	38 (7.7)	18 (7.3)	20 (8.1)
Larynx (%)	166 (33.5)	86 (34.7)	80 (32.3)
Unknown (%)	8 (1.6)	6 (2.4)	2 (0.8)
Stage n (%)
1	58 (11.7)	26 (10.5)	32 (12.9)
2	48 (9.7)	20 (8.1)	28 (11.3)
3	80 (16.1)	34 (13.7)	46 (18.5)
4	250 (50.4)	142 (57.3)	108 (43.5)
unknown	60 (12.1)	26 (10.5)	34 (13.7)
Smoking n (%)
Active	302 (60.9)	176 (71)	126 (50.8)
Past	68 (13.7)	24 (9.7)	44 (17.7)
Non-smokers	52 (10.5)	12 (4.8)	40 (16.1)
unknown	74 (14.9)	36 (14.5)	38 (15.3)
ETOH n (%)
Heavy	180 (36.3)	102 (41.1)	78 (31.5)
Occasional	114 (23)	50 (20.2)	64 (25.8)
None	90 (18.1)	54 (21.8)	36 (14.5)
unknown	102 (2.6)	42 (16.9)	70 (28.2)