Table 1.

Characteristics of the included studies

Characteristic	Roberts et al.20	Roy-Chaudhury et al.19	Sacher et al.22	Silva et al.21	Wong et al.23
Country	United Kingdom	United States, India	France	Brazil	Australia
Years	2011–2014	2013–2014	2010–2014	2009–2010	2012–2014
Follow-up, mo	17.2 ± 12.3	5.9 ± 0.7	21.3 ± 6.9	13.9 ± 4.2	18.0 ± 4.0
Patients, n	30	66	71	100	50
Device episodes adjudication	Yes (authors)	Yes (core lab)	Yes (authors)	Yes (authors)	Yes (authors)
Bradycardia definition	≤30 bpm for ≥4 beats	≤40 bpm for ≥6 sec	≤30 bpm for ≥4 beats	<40 bpm	≤40 bpm for ≥4 beats
Asystole definition	Pause ≥ 3 s	Pause ≥ 3 s	Pause ≥ 3 s	Pause ≥ 3 s	Pause ≥ 3 s
VT/VF definition	12 beats >162 bpm	≥130 bpm for ≥30 s or VF	≥150 bpm for ≥30 s or VF	VT > 30 s or VF	≥125 bpm for ≥30 s or VF
AF definition	New-onset ILR-detected AF	ILR-detected AF (new-onset and total)	ILR-detected AF (new-onset and total)	ILR-detected AF	ILR-detected AF (new-onset and total)
NOS scorea	5/6	6/6	6/6	6/6	5/6
ILR device	Reveal XT	Reveal XT or Reveal LINQ	Reveal XT	Reveal XT	Confirm

AF, atrial fibrillation; bpm, beats per minute; ILR; implantable loop recorder; NOS, Newcastle-Ottawa scale; VT, ventricular tachycardia; VF, ventricular fibrillation.

^aThree items’ metrics within the scale were not applicable and were not included in our modified scoring system.