Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flow diagram, beginning with all patients receiving their first implantable cardioverter defibrillator (ICD) in British Columbia between 1995 and 2019, and ending with the final study cohort. We used chart review data as the reference standard in the Cardiac Device Registry (CDR; Cardiac Services BC). We used the nonmissing indications in the Heart Information System (HEARTis; Cardiac Services BC) as the reference standard in this subset.
