Table 4.

Multivariate analysis for predictors of overall survival and disease-free survival

Characteristic	Statistic	Overall survival		Disease-free survival
		Hazard ratio (95% CI)	p	Hazard ratio (95% CI)	p
All patients
Hydronephrosis	Presence vs. absence	3.09 (1.59, 6.03)	<0.001	2.03 (1.13, 3.63)	0.017
Resection status	Complete vs. incomplete	0.38 (0.19, 0.76)	0.006	0.34 (0.20, 0.59)	<0.001
Age	Continuous	0.96 (0.93, 1.00)	0.051	0.94 (0.91, 0.96)	<0.001
Chemotherapy	Yes vs. no	—	—	0.38 (0.21, 0.70)	0.002
Lymphovascular invasion	Yes vs. no	—	—	2.08 (1.04, 4.15)	0.038
Concurrent chemoradiotherapy
Hydronephrosis	Presence vs. absence	5.59 (1.52, 20.61)	0.010	—	—
Resection status	Complete vs. incomplete	0.20 (0.06, 0.67)	0.009	0.17 (0.07, 0.44)	<0.001
Age	Continuous	0.93 (0.88, 0.99)	0.015	0.94 (0.91, 0.98)	0.002

CI: confidence interval.