Table 2.

Multivariant analysis for PFS and OS of patients

Characteristics	PFS		OS
	HR (95%CI)	P value	HR (95%CI)	P value
Age		0.429		0.841
Gender		0.254		0.855
Pathology	2.090(1.068‐4.089)	0.031d	2.588(1.275‐5.253)	0.008d
Stagea		0.614		0.722
Drug		0.449	0.461(0.240‐0.888)	0.020d
Smoking statusb		0.334		0.700
EGFR mutationc		0.946		0.487
APE1 expression	2.998(1.229‐7.314)	0.016d	4.724(1.564‐14.267)	0.006d

^aTwenty‐nine subjects were unable to evaluate exact stage.

^bTwo subjects were unable to confirm whether they ever smoked.

^cThirty subjects were unable to evaluate the mutation condition of EGFR.

^d P < 0.05