Fig. 1From: Clinical decision support to Optimize Care of patients with Atrial Fibrillation or flutter in the Emergency department: protocol of a stepped-wedge cluster randomized pragmatic trial (O’CAFÉ trial)Time course over which 13 emergency departments (labeled A–M) crossed over from control condition to intervention condition. ED, emergency department. Unshaded cells depict periods of control condition; dark gray cells depict transition period (not analyzed); light gray cells depict periods of intervention conditionBack to article page