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Table 1 Comparison between APACHE II, APACHE IV and PCT

From: Procalcitonin: a prognostic marker for critically ill

 

APACHE II

APACHE IV

PCT

Area under the curve

0.66

0.693

0.63

Cutoff value

17

57.5

0.93

Sensitivity

64

71.6

73.6

Specificity

62.4

57.4

57.6

Positive predictive value

41.95

41.41

41.84

Negative predictive value

80.33

82.78

84.04

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Critical Care

ISSN: 1364-8535