Age

Number examined

Sensitivity

(%)

Specificity (%)

Likelihood ratio Positive test

Likelihood ratio Negative test

Diagnostic odds ratio

0 - 10

677

43.3

100

∞

0.6

∞

11 - 20

734

58.3

98.5

38.9

0.4

97.3

21 - 30

191

24.3

96.1

6.2

0.79

7.8

31 - 40

224

26.3

94.3

4.6

0.78

5.9

41≤

125

13.3

93.6

2.1

0.9

2.3

Total

1951

47.0

97.9

22.4

0.5

44.8