Table 2.

Clinical characteristics of patients in the high- and low-risk groups from the training set.

Characteristics		High risk (N = 175)	Low risk (N = 175)	Total (N = 350)	p value
Age	<65	78	72	150	0.5892
	≥65	97	103	200
Stage	Stage I	16	33	49	0.0106
	Stage II	59	52	111
	Stage III	76	79	155
	Stage IV	24	11	35
T	T1	3	13	16	0.0272
	T2	43	31	74
	T3	75	86	161
	T4	50	45	95
	Tx	4	0	4
M	M0	150	162	312	0.1705
	M1	15	8	23
	Mx	10	5	15
N	N0	41	63	104	0.0884
	N1	50	43	93
	N2	38	34	72
	N3	40	31	71
	Nx	6	4	10
Gender	Female	60	64	124	0.7374
	Male	115	111	226
Grade	G1	5	4	9	0.7498
	G2	59	66	125
	G3	106	101	207
	Gx	5	4	9