Table 1. Correlation between GAS5-AS1 expression and clinicopathological parameters of NSCLC patients.

Characteristics	N of cases	Relative expression of GAS5-AS1
		Low	High	P-valuea
Age (years)				0.53
≤65	31	26	5
>65	17	13	4
Gender				0.218
male	36	30	6
female	12	8	4
Differentiation				0.485
well, moderate	27	21	6
poor	21	18	3
Tumor size (maximum diameter)				0.019*
≤3 cm	16	10	6
>3 cm	32	29	3
Smoking History				0.565
smokers	28	22	6
never Smokers	20	15	6
Histology type				0.39
adenocarcinoma	23	17	6
squamous carcinoma	25	21	4
Lymph node metastasis				0.022*
positive	27	25	2
negative	21	14	7
TMN stage				0.017*
I	18	11	7
II/III/IV	30	27	3

^aChi-square test.

^*P < 0.05.