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Table 2 Chest ultrasound profiles based on N-terminal pro-brain-type natriuretic peptide

From: Sonographic chest B-lines anticipate elevated B-type natriuretic peptide level, irrespective of ejection fraction

Thoracic ultrasound profile proBNP positive in relation to age Negative proBNP Total
B-profile 46 1 47
A-profile 4 10 14
Total 50 11 61
Variable Value 95 % confidence interval
Sensitivity 0.92 0.812–0.968
Specificity 0.91 0.623–0.98
Positive predictive value 0.97 0.889–0.996
Negative predictive value 0.714 0.454–0.883
LR+ 10.12 1.559–65.697
LR− 0.088 0.034–0.229
  1. LR+ positive likelihood ratio, LR− negative likelihood ratio