Rate (per 100 patient-years) of cardiac events of any type (comprising syncope, aborted cardiac arrest, or sudden cardiac death) during follow-up among LQT1 and LQT2 study subjects by menopausal period.
Event rates per 100 person-years among LQT1 and LQT2 women were calculated by dividing the number of events during each menopausal period by the follow-up time in the same period, and multiplying the result by 100.