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Table 2 ROC curve analysis describing the sensitivity, specificity, negative-and positive-predictive values for ICU admission and mechanical ventilation at different cut-off levels.

From: C-reactive protein serum levels as an early predictor of outcome in patients with pandemic H1N1 influenza A virus infection

ICU

Serum CRP (mg/L) cut-off level

Sensitivity

Specificity

PPV

NPV

33

100

42

14

100

39

94

49

15

99

60

88

63

19

98

64

82

68

20

98

75

77

72

21

97

98

71

81

27

97

112

59

83

25

95

123

53

86

27

95

149

47

90

32

95

Mechanical ventilation

Serum CRP (mg/L) cut-off level

Sensitivity

Specificity

PPV

NPV

33

100

40

7

100

39

88

46

7

99

64

75

65

9

98

102

63

79

11

98

123

50

84

12

98

164

38

91

16

97

  1. PPV, positive predictive value, NPV, negative predictive value
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BMC Infectious Diseases

ISSN: 1471-2334

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