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Table 3 Comparison of LUS and HRCT regarding subpleural opacity/septal thickening/consolidation

From: Lung ultrasound for the diagnosis of cystic fibrosis pulmonary exacerbation

Findings

Subpleural opacity/septal thickening/consolidation in HRCT

Diagnostic performance

Positive (N)

Negative (N)

Total (N)

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

DA (%)

AUC (95% CI)

P value

B-line

 LUS (N)

   

79.3

0.0

95.8

0.0

76.7

0.397 (0.000–0.872)

0.729

  Positive

23

1

24

       

  Negative

6

0

6

       

  Total

29

1

30

       
  1. N, Number; LUS, lung ultrasound; HRCT, high-resolution computed tomography; PPV, positive predictive value; NPV, negative predictive value; DA, diagnostic accuracy; AUC, area under the curve; CI, confidence interval