Table 1. The univariate analysis and multivariate analysis of the risk score model.

Parameter	Univariate analysis				Multivariate analysis
	HR	95% CI	P		HR	95% CI	P
Age	1.846	(1.261–2.710)	0.002		1.612	(1.095–2.373)	0.015
Gender	0.841	(0.609–1.162)	0.294		0.841	(0.606–1.168)	0.302
T staging	1.967	(1.408–2.746)	<0.001		1.355	(0.955–1.921)	0.089
N staging	2.053	(1.527–2.761)	<0.001		1.423	(1.042–1.943)	0.027
M staging	1.470	(1.092–1.978)	0.011		1.179	(0.873–1.593)	0.284
Risk score	1.904	(1.697–2.135)	<0.001		1.789	(1.585–2.019)	<0.001

HR, hazard ratio.