TABLE 2.

Post‐resection pathological and treatment characteristics of HNSCC patients by risk category

	Pathologic Risk Category
	Low risk		Intermediate risk		High risk		Total
	No.	%	No.	%	No.	%	No.	%	p‐value
Tumor Site									<0.0005
Oral cavity	80	35	42	23	45	22	167	27
Oropharynx	15	7	27	15	34	17	76	12
Larynx/Hypopharynx	53	23	69	37	94	46	216	35
NOS	78	35	48	26	31	15	157	25
Surgical Margin									<0.0005
Negative	186	100	158	100	43	21	387	71
Positive	0	0	0	0	158	79	158	29
Extranodal Extension									<0.0005
Negative	5	100	48	100	10	14	63	52
Positive	0	0	0	0	59	86	59	48
T‐Stage									<0.0005
Early stage (1–2)	226	100	67	36	133	65	426	69
Advanced stage (3–4)	0	0	119	64	71	35	190	31
Lymphovascular Invasion									<0.0005
No	159	95	117	81	145	77	421	84
Yes	8	5	28	19	43	23	79	16
N‐Stage									<0.0005
N‐negative	226	100	59	32	104	51	389	63
N‐positive	0	0	127	68	100	49	227	37
Surgical Treatment Category									<0.0005
Surgery Only	192	85	60	32	48	24	300	49
Surgery + RT	33	15	88	47	103	50	224	36
Surgery + CRT	1	0	38	20	53	26	92	15