 Thus we chose to conduct an exploratory study of prognostic factors for HF, MI, and stroke in patients diagnosed with AF. We selected our candidate factors from those that have previously been associated with stroke, HF, or MI in AF patients or the general population. Identification of prognostic factors for stroke, HF, and MI in those diagnosed with AF is a first step toward understanding both the development of these conditions, and the scope for targeting preventive treatments to improve prognosis. 