Table 2.

Clinical information for 529 patients in different risk categories.

Characteristics	High-risk group (n = 267)		Low-risk group (n = 262)
	n	%	n	%
Age
≤65	172	64.42	176	67.18
>65	95	35.58	86	32.82
Status
Alive	141	52.81	215	82.06
Dead	126	47.19	47	17.94
Gender
Female	88	32.96	97	37.02
Male	179	67.04	165	62.98
Stage
Stage I	96	35.96	167	63.74
Stage II	28	10.49	29	11.07
Stage III	81	30.34	42	16.03
Stage IV	60	22.46	23	8.78
Unknow	2	0.75	1	0.38
T stage
T1	99	37.08	170	64.89
T2	37	13.86	32	12.21
T3	122	45.69	58	22.14
T4	9	3.37	2	0.76
M stage
M0	196	73.41	224	85.5
M1	57	21.35	22	8.4
Unknow	14	5.24	16	6.1
N stage
N0	130	48.69	109	41.5
N1	13	4.87	3	1.15
Unknow	124	46.44	150	57.25
Race
White	235	88.01	225	85.88
Black or African American	25	9.36	29	11.07
Asian	4	1.5	4	1.53
Unknow	3	1.13	4	1.52

Abbreviations: T stage: Tumor stage; N stage: Node stage; M stage: metastasis stage.