Table 3.

Univariate analysis of OS in stage I-II LUAD patients in TCGA.

Variable	OS
	HR(95%CI)	P value
High-risk	3.08(1.83–5.18)	<0.0001
N1	3.09(1.80–5.30)	<0.0001
Stage II	2.94(1.72–5.01)	<0.0001
Age > 70y	1.71(1.01–2.89)	0.045
With tumor	8.47(4.47–16.02)	<0.0001
Residual tumor	4.62(1.59–13.39)	0.005