Table 2.

Univariate and multivariate analyses of various prognostic parameters in patients with NSCLC based on Cox regression models

Characteristics	Univariate analysis			Multivariate analysis
	P	Relative risk	95% confidence interval	P	Relative risk	95% confidence interval
WTIP	0.006	0.407	0.215–0.771	0.047	0.510	0.263–0.990
T classification	0.087	1.393	0.953–2.037	0.593	1.134	0.716–1.796
N classification	0.006	1.540	1.131–2.096	0.720	1.138	0.561–2.309
M classification	0.002	10.377	2.280–47.235	0.108	4.099	0.734–22.898
Clinical stage	0.002	1.828	1.248–2.678	0.014	1.630	1.103–2.407