Table 2.

Clinical Characteristics of Cases and Controls

	Cases (n=12)	Controls (n=26)	p-value
Gender			0.90
Male	9 (75%)	19 (73%)
Female	3 (25%)	7 (27%)
Age at XRT
Mean	52.3 (0%)	57 (0%)
Median	53 (0%)	55 (0%)
Range	32–53	33–55
T Stage			0.001*
T1	0 (0%)	13 (50%)
T2	5 (42%)	9 (35%)
T3	6 (50%)	4 (15%)
T4	1 (8%)	0 (0%)
N Stage			0.11
N0	1 (8%)	0 (0%)
N1	1 (8%)	0 (0%)
N2A	1 (8%)	0 (0%)
N2B	6 (50%)	17 (65%)
N2C	2 (17%)	8 (31%)
N3	1 (8%)	1 (4%)
Subsite			0.16
Base of Tongue	5 (42%)	18 (69%)
Tonsil	7 (58%)	8 (31%)
Cigarettes at Diagnosis			0.91
Never (<100 cig/lifetime)	6 (50%)	14 (54%)
Former (quit > 1 year)	4 (33%)	9 (34%)
Current	2 (17%)	3 (12%)
Race			0.39
White	10 (83%)	24 (92%)
Black	1 (8%)	0 (0%)
Latin American	1 (8%)	1 (4%)
Asian	0 (0%)	1 (4%)
Accelerated Fractionation			0.06
Single	4 (33%)	17 (65%)
Accelerated	8 (67%)	9 (35%)
Concurrent			0.07
No	5 (42%)	19 (73%)
Yes	7 (58%)	7 (27%)