Table 5.

Diagnostic characteristics of clinical score, chest radiograph (CR), B-type natriuretic peptide (BNP) and all combined to predict left atrial pressure ≥ 15 mm Hg

	Sensitivity	Specificity	PPV	NPV	Accuracy
CS+	64	33	78	20	58
CS+ plus CR	82	33	82	33	72
CS+ plus CR plus BNP > 400	91	22	81	40	76

CS+: positive clinical score; PPV: positive predictive value; NPV: negative predictive value.