Cut-off point

Sensitivity (%)

Specificity (%)

(≥8)

100

0

(≥7)

85.42

36.59

(≥6)

58.33

65.92

(≥5)

45.14

81.01

(≥4)

27.08

88.83

(≥3)

14.58

94.97

(≥2)

10.42

98.32

(≥1)

5.56

98.88

(≥0)

2.08

99.16

(>0)

0

100