Table 2.

Cox proportional hazard model analysis of survival time

Covariate	Coefficient b	SEM	P	Exp (b)	95% CI of Exp(b)
Age (<65 vs. >65 yrs)	−0,5287	0,7819	0,4989	0,5894	0,1283 to 2,7076
Ki67 (+ve vs. –ve)	2,9491	0,9966	0,003085	19,0890	2,7339 to 133,2877
p53 (+ve vs. –ve)	2,7283	0,9849	0,004904	15,3068	2,2428 to 104,4664
Sex (M vs. F)	−0,3679	0,6455	0,5688	0,6922	0,1966 to 2,4374
Smoking History	−2,3558	1,0740	0,02827	0,0948	0,0117 to 0,7699
(Smoker vs. Not-smokers)
TNM Stage (I-IIIA vs. IIIB-IV)	0,3726	0,6508	0,5670	1,4515	0,4080 to 5,1642