Variable

Total number of data (N = 157)

Age < 50 years

(n = 12)

Age ≥ 50 years

(n = 145)

Sensitivity

0.62

0.27

0.65

Specificity

0.42

1.00

0.40

PPV

0.84

1.00

0.84

NPV

0.18

0.11

0.19

LR+

1.07

1.08

LR−

0.90

0.73

0.88