Both correction approaches are applied to two studies from the Cooke dataset and the improvement in calibration of corrected intervals from these approaches is found to be significant.
However, having corrected for the period of infectiousness before disease onset (Ic), the percentage of HAV infection notifications within one and two corrected intervals was substantially lower, with 71.4% of cases reported within one Ic (Table 2).
BC: Black carbon; BMI: Body mass index; HFE: Hemochromatosis gene; CI: Confidence interval; MET-hrs: Metabolic equivalent hours; MMSE: Mini-Mental State Examination; NAS Normative Aging Study OROddsOdds ratio; QT interval: Heart-rate-corrected interval; VA: United States Department of Veterans Affairs.
Heart rate (HR), heart rate variability (HRVar), PR interval, QRS interval, corrected QT interval (QTc), and percentage of adjacent intervals differing by greater than 6 ms (pNN6) are provided.
At least a II- or V5-lead ECG was recorded, and the RR interval, PQ interval, QRS duration, QT interval, corrected QT interval (QTc), and ST segment were measured.
ECG values were provided in HR, absolute QT interval and corrected QT interval according to Bazett's formula, the most commonly used in clinical practice.
In the data-derived method, the correction factor is the numeric value that results in a zero correlation between RR interval and corrected QT interval values.
In order to evaluate repolarization duration we calculated average QT interval and corrected QT interval and Tp-e interval an index considered to reflect transmural dispersion of ventricular repolarization [ 26].
Low rates of treatment-related corrected QT interval and/or QT interval prolongation (1%) and elevation of hepatic enzymes (2%) were reported as adverse events.
