Table 1.

Overview of the Observational Trials and Data Sets Analyzed in This Study

Trial / Data Set	Inclusion Criteria	Dropout (No. of Patients)	Recording Duration	Measurement Condition	Types of Data	Reference	Analytical Purpose
ECV (n=20)	AF patients admitted for electrical cardioversion	Atrial flutter (2)	1 h before and 1 h after cardioversion	In‐hospital bed rest	Wrist PPG ECG	Visual inspection of single‐lead ECG	Fine‐tuning (50%) and holdout testing (50%) of the AF detection algorithm
HOL (n=40)	Patients diagnosed with paroxysmal or persistent AF prescribed for ECG Holter	Atrial flutter (5) Atrial tachycardia (1)	24 to 48 h	Daily life	Wrist PPG ECG	Visual inspection of 12‐lead ECG	Fine‐tuning (50%) and holdout testing (50%) of the AF detection algorithm
Healthy Control I to V (n=120)							Assess the likelihood of false‐positive AF detection
Trial I (n=18)	18 to 65 y, M/F healthy adults	None	3 times 24 h	Daily life	Wrist PPG	Not available
Trial II (n=17)	40 to 65 y, M/F healthy adults	None	2 times 8 to 10 h	Bedtime monitoring	Wrist PPG	Not available
Trial III (n=25)	18 to 65 y, M/F healthy adults	None	24 h	Daily life	Wrist PPG	Not available
Trail IV (n=46)	18 to 65 y, M/F healthy adults working in clinical environment	None	3 times 24 h	Daily life (home and work shift)	Wrist PPG	Not available
Trial V (n=14)	18 to 65 y, M/F professional truck drivers	None	5 to 7 d repeated up to 3 times	Daily life (home and on‐road shift)	Wrist PPG	Not available
MIT‐BIH AF (n=25)	Patients with AF mostly paroxysmal	AF event <1 min (1)	10 h	Daily life	ECG	Visual inspection of ECG	Accuracy assessment for transient AF events

AF indicates atrial fibrillation; ECV, electrical cardioversion; HOL, Holter cohort; MIT‐BIH AF, Massachusetts Institute of Technology‐Beth Israel Hospital Atrial Fibrillation Database; M/F, male/female; PPG, photo‐plethysmography.