Fig. 8: Comparison with ground truth measurements.
From: Measurement of respiratory rate using wearable devices and applications to COVID-19 detection
a Respiratory rate estimated from the heart beat interval time series data compared to ground truth measurements. b shows the Bland-Altman plot comparing the true and predicted values. The bias (mean of predicted value–true value) is −0.24 min−1 (−1.67%). The RMS error = 0.65 min−1 and the mean absolute error = 0.46 min−1 (3.0%). The 95% region is shown in yellow.
