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Table 2 Baseline characteristics of patients with and those without AKIa

From: Multiple-center evaluation of mortality associated with acute kidney injury in critically ill patients: a competing risks analysis

Variable Patients with AKI (n= 2,846) Patients without AKI (n= 5,793) P value
Mean age, years (±SD) 66.4 (15.9) 55.6 (18.5) <0.0001
Males, n (%) 1,672 (58.8) 3,609 (62.3) 0.002
Mean SAPS II score (±SD) 50.2 (20.0) 33.6 (16.9) <0.0001
Mean APACHE II score (±SD) 19.9 (7.1) 12.9 (6.4) <0.0001
Mean non-renal SOFA score (±SD) 5.3 (3.2) 3.6 (2.7) <0.0001
Transfer from ward, n (%) 1363 (47.9) 2494 (43.1) <0.0001
McCabe class, n (%)
   1 1,666 (58.5) 4,074 (70.3) <0.0001
   2 959 (33.7) 1,417 (24.5)  
   3 221 (7.8) 302 (5.2)  
Admission category, n (%)
   Medical 2,043 (71.8) 4,149 (71.6) <0.0001
   Scheduled surgery 311 (10.9) 865 (14.9)  
   Unscheduled surgery 492 (17.3) 779 (13.5)  
Chronic coexisting conditions, n (%)
   Cardiac disease 509 (17.9) 497(8.6) <0.0001
   Respiratory disease 366 (12.9) 881 (15.2) 0.004
   Liver disease 178 (6.3) 288 (5.0) 0.01
   Immunodeficiency 440 (15.5) 688 (11.9) <0.0001
   Uncomplicated diabetes mellitus 320 (11.2) 431 (7.4) <0.0001
   Complicated diabetes mellitus 148 (5.2) 124 (2.1) <0.0001
  1. aAKI, acute kidney injury; SAPS, Simplified Acute Physiology Score; APACHE, Acute Physiology and Chronic Health Evaluation; SOFA, Sequential Organ Failure Assessment; nonrenal SOFA: SOFA renal component.