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Figure 3 Unadjusted cardiac death (CD) rates in patients with atrial fibrillation (AF) compared with non-AF patients as a function of myocardial perfusion single-photon emission computed tomography results. *p < 0.001. abnl = abnormal; Mod-Sev = moderately to severely; MPS = myocardial perfusion single-photon emission computed tomography; % Myo Stress = % myocardium hypoperfused at stress (from summed stress score). Solid bars = AF patients; open bars = non-AF patients.