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Table 5 Univariate analysis for prediction of mortality or dialysis

From: The urine output definition of acute kidney injury is too liberal

Variable

Odds ratio (95% CI)

P value

Age (years)

1.02 (1.01 to 1.03)

0.001

Body weight (kg)

0.98 (0.97 to 0.99)

0.005

APACHE II score

1.18 (1.14 to 1.22)

<0.0001

SAPS II

1.08 (1.07 to 1.10)

<0.0001

AKICr (yes or no)

3.00 (2.02 to 4.44)

<0.0001

Vasopressor use (yes or no)

1.65 (1.11 to 2.43)

0.01

Hypotension, MAP <60 mmHg (yes or no)

1.25 (0.85 to 1.84)

0.26

Diuretic use (yes or no)

1.60 (0.67 to 3.86)

0.29

Fluid balance (percentage/body weight)

1.16 (1.11 to 1.22)

<0.0001

Baseline creatinine (μmol/l)

1.005 (1.002 to 1.007

<0.0001

Urine output <0.5 ml/kg/hour (AKIUO)

2.50 (1.60 to 3.89)

<0.0001

Urine output <0.3 ml/kg/hour (UO<0.3)

5.21 (3.48 to 7.80)

<0.0001

  1. AKICr, acute kidney injury by the creatinine definition; AKIUO, acute kidney injury by the urine output definition; MAP, mean arterial pressure; SAPS, Simplified Acute Physiological Score; UO<0.3, urine output <0.3 ml/kg/hour averaged over 6 hours.