Table 8: Size threshold in function of the age group

Age group (years)

[0 – 2.5]

[2.6 – 10]

[10.1 – 18]

Width threshold (mm)

45

30

15

Specificity

94%

93%

67%

Sensibility

43%

50%

60%

Youden’s index

0.37

0.43

0.27