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Receiver operating characteristic curve of post-stressor NT-proBNP and MSIMI. In assessing the utility of post-stressor NT-proBNP as a predictor of MSIMI, the ROC curve yielded a cut-off value of 98.80 pg/mL, with a sensitivity of 68.8% and a specificity of 77.8% (AUC: 0.68, 95% CI: 0.51–0.84; P = 0.032). AUC: Area under the curve; CI: Confidence interval; MSIMI: Mental stress-induced myocardial ischemia; NT-proBNP: N-terminal prohormone of brain natriuretic peptide.
