Table 5.

Results of pairwise score comparison.

Score	Compare	SE	Z	P
APACHEIII(POD1)
	vs. VIS(POD1)	0.006	1.197	0.231
	vs. APACHEIII(RRTt0)	0.004	1.250	0.211
	vs. VIS(RRTt0)	0.005	0.087	0.931
	vs. SOFA(RRTt0)	0.006	0.779	0.438
	vs. SOFA(POD1)	0.006	1.872	0.077
VIS(POD1)
	vs. APACHEIII(RRTt0)	0.005	2.462	0.014*
	vs. VIS(RRTt0)	0.006	1.277	0.202
	vs. SOFA(RRTt0)	0.006	0.400	0.689
	vs. SOFA(POD1)	0.007	0.665	0.506
APACHEIII(RRTt0)
	vs. VIS(RRTt0)	0.004	1.151	0.250
	vs. SOFA(RRTt0)	0.004	2.013	0.044*
	vs. SOFA(POD1)	0.005	3.158	0.002
VIS(RRTt0)
	vs. SOFA(RRTt0)	0.006	0.860	0.390
	vs. SOFA(POD1)	0.006	1.949	0.051
SOFA(RRTt0)
	vs. SOFA(POD1)	0.007	1.060	0.289

^*The difference is statistically significant. APACHEIII, acute physiology and health score; POD1, the first postoperative day; VIS, vasoactive-inotropic score; RRT, renal replacement therapy; RRTt₀, the initiate of RRT; SOFA, sequential organ failure assessment.