Acute Coronary Syndrome Risk Prediction Using Portable Cable-Free ECG Device Combined With Clinical Risk Assessment.

Although pairwise AUC differences did not reach statistical significance, several consistent findings, including the absence of selection bias, stability of STD across follow-up event strata, conservative distortion limited to the major-cardiac-event subgroup, and a numerical advantage of patient-matched over randomly paired STD support the use of postevent HB-ECG as an individualized physiological reference.

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