Key result
The proposed automatic QT-interval measurement method on a smartphone demonstrated high agreement with manual measurements, with a correlation coefficient of 0.642 and a 95% LoA range of 0.216.
Why the study?
Manual measurement of QT-interval, especially for 12-leads ECG, is time-consuming, necessitating an automatic QT-interval measurement method.
Effect estimate: Correlation coefficient 0.642
The proposed automatic QT-interval measurement method implemented on a smartphone provides high accuracy and good agreement with manual measurements, enabling reliable portable ECG monitoring.
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Supports smartphone QT monitoring feasibility; leaves open clinical validation before adoption.
Trio Pambudi Utomo (2021) studied Arrhythmia / ECG monitoring (n=115). Automatic QT-interval measurement method vs. Manual QT-interval measurement was evaluated on Correlation coefficient and range of 95% Limit of Agreement (LoA) (Correlation coefficient 0.642). The proposed automatic QT-interval measurement method on a smartphone demonstrated high agreement with manual measurements, with a correlation coefficient of 0.642 and a 95% LoA range of 0.216.
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