Classification of device type
CIED-type was classified as either dual-chamber permanent pacemaker (PPM), dual chamber implantable cardioverter-defibrillator (ICD), cardiac resynchronization therapy defibrillator (CRT-D), cardiac resynchronization therapy pacemaker (CRT-P), or implantable loop recorder (ILR). Single-chamber PPMs, leadless PPMs, and single-chamber ICDs were not included in the analysis.