6. Figure legends:
Figure 1: Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) flow diagram
Figure 2: Forest plot for prevalence of NOAF in COVID-19 Patients
Figure 3A: Forest plot for severity of COVID-19 patients among NOAF and without a history of atrial fibrillation as controls
Figure 3B: Forest plot for severity of COVID-19 patients among NOAF and with a history of pre-existing atrial fibrillation as controls
Figure 4A: Forest plot for mortality of COVID-19 patients among NOAF and without a history of atrial fibrillation as controls
Figure 4B: Forest plot for mortality of COVID-19 patients among NOAF and with a history of pre-existing atrial fibrillation as controls