Table 3.

Multivariate logistic regression analysis for factors associated with mortality among hospital-acquired acute kidney injury (HA-AKI) patients

VariableOR95% CIP
HA-AKI versus non-HA-AKI1.311.27 to 1.37<0.01
Cause of HA-AKI<0.01
    prerenal (functional)1.751.46 to 1.98
    renal (intrinsic)2.411.85 to 2.71
    postrenal (obstructive)Reference
AKIN score<0.01
    AKIN stage 10.200.18 to 0.22
    AKIN stage 20.170.16 to 0.19
    AKIN stage 3Reference
nrHA-AKI versus erHA-AKI2.071.59 to 2.71<0.01
lrHA-AKI versus erHA-AKI1.951.54 to 2.47<0.01
Renal replacement therapy1.211.19 to 1.23<0.01
Chronic kidney disease1.181.17 to 1.20<0.01
Age (years)<0.01
    20 to 390.0190.016 to 0.021
    40 to 590.0480.043 to 0.054
    60 to 790.1030.092 to 0.116
    ≥80Reference
Male versus female gender0.910.77 to 1.070.09
Charlson Comorbidity Score<0.01
    <40.0410.036 to 0.063
    4 to 50.1630.132 to 0.194
    >6Reference
Medicine versus surgery ward1.251.23 to 1.26<0.01
  • HA-AKI, hospital-acquired acute kidney injury; OR, odds ratio; CI, confidence interval; nrHA-AKI, referred hospital-acquired acute kidney injury; HA-AKI without nephrology referral; lrHA-AKI, late referral HA-AKI.