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Table 2 Serum D-dimer levels associated with isolated injury

From: Serum D-dimer level as a biomarker for identifying patients with isolated injury to prevent unnecessary whole-body computed tomography in blunt trauma care

Cut-off value of D-dimer (μg/mL)

≤0.5

≤1.0

≤2.0

≤2.5

≤5.0

≤10.0

≤20.0

Sensitivity (%)

3.3

17.0

31.1

35.8

54.2

71.7

86.8

Specificity (%)

100.0

100.0

100.0

100.0

93.0

83.1

66.2

Positive predictive value (%)

100.0

100.0

100.0

100.0

95.1

92.7

88.5

Negative predictive value (%)

25.7

29.0

33.0

34.3

41.1

50.0

63.2

Number of patients with D-dimer ≤ cut-off value, n

7

36

66

76

120

164

207

Proportion of patients with D-dimer ≤ cut-off value, %

2.5

12.7

23.3

26.9

42.4

58.0

73.1