Table 4. Multivariate Cox proportional hazards model for patient survival.

	RR	95% Cl	p-value
Age	0.748	0.595-0.940	0.013
Presence of comorbid disease	8.326	3.34-18.416	0.02
Incidence of peritonitis	0.238	0.085-0.664	0.006
Pretreatment low serum albumin	0.170	0.042-0.831	0.025
Pretreatment urine volume	1.004	1.001-1.008	0.021
PD modality (CAPD)	2.861	1.281-17.879	0.018