Table 4: Diagnostic test evaluation for the diagnosis

of transudate vs exudate by ultrasound.

 

Light’s criteria

Total

n (%)

Transudate

n (%)

Exudate

n (%)

Ultrasound

Transudate

Exudate

Total

13 (81.2)

3 (18.7)

16 (100.0)

2 (20.0)

8 (80.0)

10 (100.0)

15 (57.7)

11 (42.3)

26 (100.0)

Diagnostic test evaluation

Sensitivity

Specificity

PPV

NPV

LR +

LR -

Accuracy

81.25%

80.00%

86.66%

72.73%

4.06

0.23

80.77

PPV = positive predictive value.

NPV = negative predictive value.

LR = likelihood ratio.