Table I.

Clinical characteristics of patients according to CTR1 expression.

		CTR1 expression, n
Characteristics	Patients, n	Low	High	P-value
All patients	293	177	116
Age, years				0.077a
≤55	145	95	50
>55	148	82	66
Sex				0.870a
Female	90	55	35
Male	203	122	81
Tumor size, cm				0.576a
≤4	165	102	63
>4	128	75	53
T classification				<0.001b
T1	185	132	53
T2	27	13	14
T3	77	31	46
T4	4	1	3
N classification				0.489a
N0	35	17	18
N1	2	0	2
Nx	256
Distant metastasis				0.726a
No	277	168	109
Yes	16	9	7
Tumor, node, metastasis stage				<0.001b
I	179	128	51
II	23	10	13
III	71	29	42
IV	20	10	10
Fuhrman grade				0.003b
1	31	20	11
2	217	140	77
3	42	17	25
4	3	0	3
Necrosis				0.194a
Absent	252	156	96
Present	41	21	20
Eastern Cooperative Oncology Group performance status				0.018b
0	214	137	77
1	64	33	31
2	11	7	4
3	4	0	4

^aχ² test or Fisher's exact test.

^bCochran-Mantel-Haenszel χ² test. P<0.05 was considered to indicate a statistically significant difference. CTR1, copper transporter 1.