Beta coefficients for the association of primary risk factors with incident atrial fibrillation (AF) using active Atherosclerosis Risk in Communities (ARIC) follow-up compared to active ARIC follow-up plus surveillance of Centers for Medicare and Medicaid Services (CMS) data.

Estimates correspond to log(hazard ratios) from Cox proportional hazards regression models.
ARIC =  Atherosclerosis Risk in Communities.
CMS =  Centers for Medicare and Medicaid Services.
Exposed (Referent).
*Prior heart disease defined as the presence of heart failure, myocardial infarction or coronary heart disease.
P-values from a one-degree-of-freedom Wald chi-square test of the null hypothesis that the beta coefficient from model one equals the beta coefficient from model two.