Table 2.

Multivariate Cox hazards models of survivals in all patients with non-small cell lung cancer.

		Overall survival			Recurrence-free survival			Cancer-specific survival
Variable	Per unit for HR	HR	95% CI	P – value	HR	95% CI	P – value	HR	95% CI	P – value
Age	1-year	1.034	1.015 − 1.052	< 0.001	1.005	0.992 − 1.019	0.453	1.015	0.995 − 1.037	0.150
Sex	Male/Female	1.464	0.852 − 2.514	0.167	1.267	0.851 − 1.886	0.243	1.175	0.634 − 2.177	0.610
Smoking status	Ever/Never and Unknown	1.318	0.705 − 2.462	0.387	1.103	0.700 − 1.738	0.674	1.267	0.612 − 2.626	0.524
Histology	SCC/ADC	0.850	0.571 − 1.265	0.423	0.955	0.690 − 1.322	0.783	0.762	0.463 − 1.252	0.283
	Others/ADC	1.564	0.941 − 2.599	0.085	1.249	0.802 − 1.947	0.326	1.332	0.712 − 2.494	0.370
Stage	1-stage	2.075	1.727 − 2.494	< 0.001	2.356	2.024 − 2.741	< 0.001	2.526	2.008 − 3.179	< 0.001
EGFR mutation with IHC	Positive/Negative	0.929	0.574 − 1.502	0.762	0.912	0.634 − 1.312	0.618	0.904	0.497 − 1.643	0.740
Tumoral CD200 expression	High/Low	0.654	0.451 − 0.949	0.026	0.720	0.538 − 0.963	0.027	0.549	0.342 − 0.879	0.013
Tumoral CD200R1 expression	High/Low	1.308	0.923 − 1.855	0.132	0.958	0.733 − 1.251	0.751	1.688	1.073 − 2.654	0.024
Stromal CD200R1 expression	High/Low	1.259	0.901 − 1.759	0.177	1.114	0.840 − 1.477	0.454	1.070	0.701 − 1.632	0.755