2.2. Settings and Population
atrial flutter
ATRIAL FLUTTER
We selected the Fenglin Community Health Center as the software group, as it had eligible servers to install the CDSS and was willing to participate in the study. Considering the population of residents and the GP in AF special consulting rooms, we selected the Beicai Community Health Center, which is also in Shanghai, China, as the control group. The GPs in the two sites included were an associate chief physician and an experienced attending physician, respectively. Patients who sought medical care in the AF special consulting rooms of the two community health centers between April 1, 2020, and October 1, 2020, were potential participants. Patients who were older than 18 years of age, diagnosed with any type of AF or atrial flutter (ICD-10 codes are shown in Supplementary Material) during a consultation or within their medical history, and who were willing to participate in the study were included in this study. Individuals with valvular AF or prosthesis valves and those who were pregnant or breastfeeding were excluded.