What is the difference between the HAS-BLED and CHADS2 scores for predicting clinically relevant bleeding in anticoagulated patients with atrial fibrillation?
The HAS-BLED score has been found to have better prediction accuracy for major bleeding than the CHADS2 or CHA2DS2-VASc scores in anticoagulated patients with atrial fibrillation. Studies have demonstrated that the HAS-BLED score has a higher sensitivity and specificity for major bleeding than both the CHADS2 score and the CHA2DS2-VASc score. Additionally, the HAS-BLED score has been found to have better predictive power for major bleeding than the CHADS2 or CHA2DS2-VASc scores, even after adjusting for other risk factors. The HAS-BLED score is also more comprehensive than the CHADS2 or CHA2DS2-VASc scores as it incorporates additional risk factors such as alcohol consumption, use of antiplatelet agents, and laboratory values. 