Figure 2. PRISMA flowchart of the systematic review for OSA being an independent risk factor for VTE.

OSA: obstructive sleep apnea, VTE: venous thromboembolism, DVT: deep vein thrombosis, PE: pulmonary embolism; PRISMA: Preferred Reporting Items for Systematic Reviews and Meta-Analyses

The screening performed for this literature review follows guidelines in the PRISMA statement [55].