Fig. 3: Evaluation of heart rate and R–R interval accuracies among the healthy participants. | Communications Biology

Fig. 3: Evaluation of heart rate and R–R interval accuracies among the healthy participants.

From: Using smart speakers to contactlessly monitor heart rhythms

Fig. 3

A Scatter plot of average heart rate in beats per minute (BPM) compared with ground truth. B Cumulative distribution function (CDF) of the absolute heart rate error. C Scatter plot of R–R intervals compared with ground truth. D The CDF of the absolute R–R interval error. Limits of agreement (LOA) were computed using twice the standard deviation (gray dashed line in A and C. Median and 90th percentile values are noted in red circles in B and D.

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