Table 2 Cox proportional hazard model analysis of survival time

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