Characters

Number ≥ 2

Number ≥ 6

Value

95% CI

Value

95% CI

Sensitivity

93.9%

79.8% - 99.3%

30.3%

15.6% - 48.7%

Specificity

59.7%

47.0% - 71.5%

95.5%

87.5% - 99.1%

DA

71.0%

61.1% - 79.6%

74.0%

64.3% - 82.3%

Youden’s index

53.6%

39.4% - 67.9%

25.8%

9.4% - 42.3%

PPV

53.4%

39.9% - 66.7%

76.9%

46.2% - 95.0%

NPV

95.2%

83.8% - 99.4%

73.6%

63.0% - 82.4%

LR+

2.33

1.72 - 3.16

6.77

2.00 - 22.95

LR−

0.10

0.03 - 0.39

0.73

0.58 - 0.92

DOR

22.96

5.07 - 104.05

9.28

2.34 - 36.70