. 2006 Dec 11;98(2):226–230. doi: 10.1111/j.1349-7006.2006.00379.x

Table 4.

Cox regression analysis of prognostic factors for overall survival after second‐line treatment: a stepwise forward procedure

Factor	Variable	P‐value HR (95% CI)
Histology	Adenocarcinoma versus other	0.0639
Histology	Adenocarcinoma versus other	−
Smoking	Non‐smoker versus smoker	0.0052
Smoking	Non‐smoker versus smoker	0.325 (0.148–0.715)
PS	0 versus 1	0.0258
PS	0 versus 1	(0.258–0.917)
Docetaxel	– versus +	0.6720
Docetaxel	– versus +	−
EGFR‐TKI	– versus +	0.0084
EGFR‐TKI	– versus +	2.844 (1.306–1.823)

PS, performance status; EGFR‐TKI, epidermal growth factor receptor‐tyrosine kinase inhibitor; HR, hazard ratio; CI, confidence interval.