Table 1. Correlation between CTHRC1 expression and clinicopathologic characteristics of NSCLC.

Characteristics	CTHRC1 expression		Chi-square test
	High expression	Low expression	p-value
Normal lung tissues	6	66	<0.001
NSCLC tissues	212	80
Age(years)			0.584
≤ 50	68	23
> 50	144	57
Gender			0.282
Male	151	62
Female	61	18
Smoking			<0.001
Yes	168	21
No	44	59
Clinical stage			<0.001
I	20	33
II	102	41
III	52	5
IV	38	1
T Classification			<0.001
T1	62	45
T2	74	21
T3	57	12
T4	19	2
N Classification			0.097
N0	106	53
N1	78	20
N2	15	4
N3	13	3
Lymph node metastasis			0.013
N0	106	53
N1-3	106	27
M Classification			<0.001
M0	174	79
M1	38	1
EGFR mutation			0.562
Positive	29	17
Negative	35	16
K-ras mutation			0.711
Positive	9	5
Negative	49	34