Table 2.

Univariate and multivariate analyses of factors associated with overall survival of NSCLC patients

Factors	Univariate	Multivariate
	P	Hazard ratio	95 % CI	P
Age, years (≤60 vs >60)	0.924
Gender (male vs female)	0.427
Histological type (ADC vs non-ADC)	0.134
Smoking status (smoker vs nonsmoker)	0.115
Differentiation (well-moderate vs poor)	0.369
Tumor status (T1-T2 vs T3-T4)	0.019	1.248	0.749-2.687	0.034
TNM stage (I-II vs III)	0.007	1.894	0.948-4.679	0.015
IL-37 expression (low vs high)	0.003	2.047	1.211-5.145	0.011