Table 2. Univariable and multivariable analyses of 437 patients with resected IIIA NSCLC.

Variable	RFS					OS
	Univariable analysis, P	Multivariable analysis				Univariable analysis, P	Multivariable analysis
		Hazard ratio	95% CI	P			Hazard ratio	95% CI	P
Post radiotherapy (yes/no)	<0.001	1.499	1.122–2.002	0.006		0.506	NA
Molecular targeted therapy (yes/no)	<0.001	1.895	1.413–2.542	<0.001		0.884
Tumor size (continued)	0.001	1.114	1.061–1.168	<0.001		<0.001	1.167	1.104–1.233	<0.001
N1p (continued)	<0.001	1.068	1.028–1.110	0.001		<0.001	NA
N2p (continued)	<0.001	1.046	1.023–1.069	<0.001		<0.001	1.064	1.042–1.087	<0.001

NSCLC, non-small cell lung cancer; RFS, recurrence-free survival; OS, overall survival; N1p, count of positive lymph nodes in N1 group; N2p, count of positive lymph nodes in N2 group.