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Table 4 Comparison of diagnostic values

From: Daily urinary urea excretion to guide intermittent hemodialysis weaning in critically ill patients

Variables

UO >8.6 ml/kg/24 h

Uurea >148 mmol/L

eUrea >1.35 mmol/kg/24 h

P value

Sen, %

89.2a

64.9a

89.2b

0.01

Spe, %

73.3a

90.0b

96.7b

0.01

PPV, %

80.5a

88.9b

97.1b

0.05

NPV, %

84.6

67.5

87.9

0.09

Accuracy, %

82.1a

76.1a

92.5b

0.03

  1. eUrea daily urinary urea excretion, PPV positive predictive value, NPV negative predictive value, Sen sensitivity, Spe specificity, UO urine output, Uurea urinary urea concentration
  2. a,bValues are significantly different