Fig. 2: Correlation and Bland-Altman plot comparing photoplethysmography-based and holter-based atrial fibrillation burden. | npj Digital Medicine

Fig. 2: Correlation and Bland-Altman plot comparing photoplethysmography-based and holter-based atrial fibrillation burden.

From: Ambulatory atrial fibrillation detection and quantification by wristworn AI device compared to standard holter monitoring

Fig. 2

Comparison between photoplethysmography (PPG)-based and Holter-based atrial fibrillation (AF) burden across 24 h. Demonstrating (a) a correlation of R2: 0.9937 between the PPG-based and Holter-based AF burden across 24-h, and (b) a Bland-Altman plot showing a mean difference in AF burden between PPG and Holter of 0.17% with lower and upper limits of −4.19% (SD: −1.96) and 4.53% (SD: 1.96), respectively.

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