Table 1.

The data labels used in scoring the wrist device’s data.

Label in ECG	Label in PPG	Label in Holter	Result
Possible arrhythmia	Arrhythmia	Atrial fibrillation	True positive
Possible arrhythmia	Arrhythmia	Sinus rhythm	False positive
No rhythm deviation	Regular rhythm	Sinus rhythm	True negative
No rhythm deviation	Regular rhythm	Atrial fibrillation	False negative