Fig. 3From: Frequency of atrial thrombus formation in patients with atrial fibrillation under treatment with non-vitamin K oral anticoagulants in comparison to vitamin K antagonists: a systematic review and meta-analysisForest plot to compare the frequencies of thrombus under treatment with NOACs vs. VKAs; risk ratios and 95% CIs were estimated using the Mantel–Haenszel method (fixed-effects model)Back to article page