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Receiver operating characteristic (ROC) curves for discriminating between normal and abnormal diastolic LV function using NT‐proBNP (red line) or NT‐proBNP plus 3 latent factors identified by PLS‐DA (green line). Combining the 3 latent factors with NT‐proBNP increased (P<0.0001) the AUC from 0.64 to 0.73. AUC indicates area under the curve; LV, left ventricular; NT‐proBNP, N‐terminal of the prohormone brain natriuretic peptide; PLS‐DA, partial least square discriminant analysis.
