Table II.

Univariate and multivariate analyses assessing associations between clinicopathological variables and acute kidney injury on postoperative day 0.

	Univariate	Multivariate
Variables	P-value	Likelihood ratio P-value	Odds ratio (95% confidence interval)	Odds ratio P-value
Procedure type (ORP vs. RARP)	0.001b	<0.001b	Not convergent	0.988
Age (<67 vs. ≥67 yearsa)	0.067
BMI (<24 vs. ≥24 kg/m2a)	0.061
Initial PSA (<7.55 vs. ≥7.55 ng/mla)	0.022b	0.091	0.44 (0.16 to 1.17)	0.099
Preoperative sCre (<0.82 vs. ≥0.82 mg/dla)	0.044b	0.138	0.48 (0.18 to 1.29)	0.147
Prostate volume (<29.9 vs. ≥29.9 mla)	0.541
Pathological T stage (≤pT2 vs. ≥pT3)	0.033b	0.193	0.52 (0.19 to 1.38)	0.187
Pathological N stage (0/x vs. 1)	0.508
Pathological Gleason score (≤7 vs. ≥8)	0.494
Surgical time (<231 vs. ≥231 mina)	<0.001b	0.002b	0.20 (0.07 to 0.64)	0.006b
Blood loss (<450 vs. ≥450 mla)	0.115
Fluid infusion (<2100 vs. ≥2100 mla)	0.745

^aMedian data.

^bStatistically significant data. ORP, open radical prostatectomy; RARP, robot-assisted radical prostatectomy; BMI, body mass index; PSA, prostate-specific antigen; sCre, serum creatinine.