Participants
Primary care practices in the province of Nova Scotia, Canada were randomized 1:1 to CDS (intervention) and usual care (control) groups. Patients within each practice were recruited by their provider to participate. Inclusion criteria were: 18 years of age or older, having electrocardiographically confirmed AF or documentation of past diagnosis or management of AF in their medical record, and ability to communicate in English and provide informed consent. The only exclusion criterion was having a poor likelihood of surviving 12 months after enrollment.