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Comparison of ecgAI (hidden Markov model [HMM]+convolutional neural network [CNN]) derived measurements and MUSE/University of California, San Francisco (UCSF) values for 4 commonly reported ECG measurements. The scatterplot depicts 35 466 comparisons. The line y=x is drawn to help identify any bias. The unit for heart rate is beats per minute while that of the other 3 metrics is milliseconds.
