Table 3b. COX proportional hazard model for survival analysis in patients in which EGFR mutation status has been detected (n=91).

Variable	HR	95%CI	P-value
Adeno/Non-adeno	0.581	0.288–1.171	0.129
Never-smoker /ever-smoker	0.607	0.351–1.048	0.073
Mutation negative/positive	2.543	1.345–4.808	0.004
PS 0, 1/2–4	0.166	0.091–0.303	<0.001

Tested variables; gender, smoking, histology, PS, mutation excluded variable; gender.