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Table 2 Patients' characteristics and outcomes -- All patients and patients with and without late recognition of severity

From: Fluid accumulation, recognition and staging of acute kidney injury in critically-ill patients

  All patients Patients with late recognition Patients without late recognition
  n = 253 n = 64 n = 189
Race - Caucasian 85% 87% 84%
Race - African American 6.3% 3.1% 7.4%
Gender - male 63% 59% 65%
Serum creatinine - day 1- mg/dL -- median (IQR) 1.6 (1.2-2.2) 1.65 (1-2.4) 1.60 (1.2-2.2)
CKD status -- n (%) 79 (31) 16/62 (25) 63/187 (33)
Daily urine volume - mL -- median (IQR) 1295 (621-2145) 1151 (475-1955) 1338 (670-2200)*
Oliguria <400 ml/24 hours - n (%) 103 (40.7) 31/64 (48) 72/189 (38)
Daily fluid balance (L/24 h) - median (IQR) 0.7 (-0.3-2.3) 1.6 (0.0-3.6) 0.5 (-0.4-2.0)**
Total fluid accumulation (L) - median (IQR) 4.9 (0.6-10.9) 11.2 (5.5-16.5) 3.2 (-0.7-7.3) **
Total fluid accumulation as % of body weight - median (IQR) 6.4 (0.7-14.4) 15.6 (7.0-21.3) 4.2 (-.8-10.3) **
Need for dialysis 157/253 (52) 46/64 (71) 111 (58) ***
Hospital mortality 93/253 (36) 26/64 (40) 67/189 (35)
  1. * P = 0.003; ** P < 0.001; *** P = 0.061 (not significant)
  2. CKD: chronic kidney disease; IQR: interquartile range.
  3. For conversion of creatinine expressed in conventional units to standard units, multiply by 88.4.