Fig. 3.

Forest plot shows a comparative analysis of the occurrence of thromboembolism and stroke in patients with atrial fibrillation when evaluated by means of the CHADS₂ score. P ≤0.05 was considered statistically significant. The occurrence of thromboembolism and stroke when evaluated by means of the CHADS₂ score was not significantly different (P_diff=0.97).

AF = atrial fibrillation; CHADS₂ = congestive heart failure, hypertension, age ≥75 yr, diabetes mellitus, and prior stroke or transient ischemic attack; CI = confidence interval; M-H = Mantel-Haenszel