Question: what is the formula to calculate qtc?
Answer: For each subject, the QT and RR intervals were used to calculate the QTc by use of four different heart rate correction formulas: Bazett ; Fridericia ; Hodges [QTc = QT + 1.75 *(HR-60)]; and Framingham [QTc = QT + 0.154*(1-RR)].