Table 2

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

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)

* P = 0.003; ** P < 0.001; *** P = 0.061 (not significant)

CKD: chronic kidney disease; IQR: interquartile range.

For conversion of creatinine expressed in conventional units to standard units, multiply by 88.4.

Macedo et al. Critical Care 2010 14:R82   doi:10.1186/cc9004