Table 1.

Correlation between USP21 expression and clinicopathological parameters of NSCLC patients (n = 42).

Clinicopathological parameters	n	Relative USP21 expression
		Low	High	p Value
Age				0.612
≤60	26	16	10
>60	16	7	9
Sex				0.473
Male	31	14	17
Female	11	6	5
Smoker				0.078
Yes	25	11	14
No	17	10	7
Lymph node metastasis				0.035*
Positive	14	9	5
Negative	28	11	17
TNM stage				0.041*
I/II	26	14	12
III/IV	16	5	11
Tumor differentiation				0.246
Well/moderate	37	20	17
Poor	5	2	3
Histological tumor type				0.453
Adenocarcinoma	21	12	9
Squamous cell carcinoma	14	6	8
Others	7	4	3

χ² test. *p < 0.05