Table 4.

Multivariate analysis of disease-free survival and overall survival in non-squamous histology (n = 108)^a

Prognostic factors	Disease-free survival			Overall survival
	HR	95% CI	P valueb	HR	95% CI	P valueb
Operation
Lobectomyc	1.00			1.00
Pneumonectomy	1.41	0.77–2.62	0.269	2.63	1.45–4.79	0.002
Tumor size (cm)
≤3.9d	1.00			1.00
>3.9	2.14	1.33–3.45	0.002	1.53	0.90–2.61	0.118
Stagee
I	1.00			1.00
II	2.65	1.42–4.96	0.002	1.93	0.97–3.85	0.062
IIIA	3.76	2.09–6.77	<0.0001	2.58	1.40–4.76	0.002
IIIB	5.23	2.08–13.11	<0.0001	3.52	1.44–8.62	0.006
Expression of Bax
High	1.00			1.00
Low	1.87	1.12–3.14	0.017	1.79	1.04–3.08	0.037

HR, hazard ratio; CI, confidence interval. ^aExcluding one patient who died of post-operative complication. ^bCox proportional-hazards regression model. ^cIncluding wedge resection. ^dMedian longest diameter of primary tumor. ^ePost-operative pathologic staging.