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Table 2 Overtriage and undertriage rates, sensitivity, specificity, PPV, NPV, and accuracy of field triage decision factors for each step of the CDC criteria

From: Accuracy and influencing factors of the Field Triage Decision Scheme for adult trauma patients at a level-1 trauma center in Korea

%

Overtriage

Undertriage

Sensitivity

Specificity

PPV

NPV

Accuracy

STEP 1

31.2

26.9

38.0

90.7

68.8

73.1

72.3

STEP 2

50.2

33.0

16.6

91.0

49.8

67.0

65.0

STEP 3

48.2

26.6

49.5

75.2

51.8

73.4

66.2

STEPS 1 + 2

40.5

25.8

46.3

83.0

59.5

74.2

70.2

STEPS 1 + 2 + 3

48.6

20.0

70.0

64.4

51.4

80.0

66.4

  1. CDC Centers for Disease Control and Prevention, PPV positive predictive value, NPV negative predictive value
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