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Table 1 Baseline characteristics of acute kidney injury (AKI) patients with and without renal replacement therapy (RRT).

From: Efficacy of renal replacement therapy in critically ill patients: a propensity analysis

Variable Patients with RRT
(N= 545)
Patients without RRT
(N= 2301)
P value
Age, mean (SD) 61.3 (16.6) 67.6 (15.5) < 0.0001
Males, no. (%) 363 (66.6) 1309 (59.9) < 0.0001
SAPS II score, mean (SD) 56.8 (19.2) 48.6 (19.8) < 0.0001
APACHE II score, mean (SD) 21.4 (7.0) 19.6 (7.1) < 0.0001
Transfer from ward, no. (%) 291 (53.4) 1072 (46.6) 0.004
McCabe, no. (%)
1 314 (57.6) 1352 (58.8)  
2 188 (34.5) 771 (33.5) 0.88
3 43 (7.9) 178 (7.7)  
Admission category, no. (%)
Medical 388 (71.2) 1655 (71.9)  
Scheduled surgery 52 (9.5) 259 (11.3) 0.25
Unscheduled surgery 105 (19.3) 387 (16.8)  
Chronic coexisting conditions, no. (%)
Cardiac disease 89 (16.3) 420 (18.3) 0.29
Respiratory disease 55 (10.1) 311 (13.5) 0.03
Liver disease 50 (9.2) 128 (5.6) 0.002
Immunodeficiency 104 (19.1) 336 (14.6) 0.01
Uncomplicated diabetes mellitus 63 (11.6) 257 (11.2) 0.79
Complicated diabetes mellitus 30 (5.5) 118 (5.1) 0.72
  1. SAPS, Simplified Acute Physiology Score; APACHE, Acute Physiology and Chronic Health Evaluation.