Table 1.

Multiple variables cox proportional hazards analysis in 90 NSCLC patients.

Correlation between SLC7A11 expression and clinicopathological parameters of NSCLC
Clinicopathological parameters	N of cases (n=90)	Relative expression of SLC7A11
		Low	High	P-value
Age (years)				0.753
<65	38	17	21
>65	52	25	27
Gender				0.887
male	50	23	27
female	40	19	21
Differentiation				0.337
well, moderate	25	12	13
poor	65	24	41
Tumor size				0.009
<4cm	41	34	7
>4cm	49	28	21
Primary location				0.846
left lung	42	20	20
right lung	48	23	25
Smoking history				0.010
ever or now	36	12	24
never	54	33	21
Lymph node metastasis				0.009
positive	47	21	26
negative	43	31	12
TMN stage				0.013
I	33	25	8
ll/lll	57	28	29