Seasonal Variation in Stroke and Stroke-Associated Mortality in Patients with a Hospital Diagnosis of Nonvalvular Atrial Fibrillation or Flutter

<i>Aim:</i> There are few data on seasonal variation in stroke and seasonal variation in mortality after stroke in patients with atrial fibrillation. We examined the seasonal pattern in stroke occurrence and the effect of the season on mortality after stroke in patients with a history of nonvalvular atrial fibrillation. <i>Methods:</i>We identified all individuals, aged 40–89 years, with an incident diagnosis of stroke of...