Table 3.

Results of the Cox regression analysis (stepwise backward procedure)

Variable	Score	Coeffizient	SE	HR	95% CI	P
(a) Step 1
Gender
Male (n = 25)	1	1.81	0.82	6.08	1.23–30.15	0.027
Female (n = 43)	0
Smoking
Yes (n = 34)	1	1.01	0.82	2.75	0.55–13.64	0.217
No (n = 34)	0
(b) Step 2
Gender
Male (n = 25)	1	2.09	0.79	8.12	1.72–38.32	0.008
Female (n = 43)	0

Abbreviations: SE – Standard Error, HR – Hazard Ratio, CI-Confidence Intervall