RT Journal Article T1 Is the ORBIT Bleeding Risk Score Superior to the HAS-BLED Score in Anticoagulated Atrial Fibrillation Patients? A1 Esteve-Pastor, Maria Asuncion A1 Garcia-Fernandez, Amaya A1 Macias, Manuel A1 Sogorb, Francisco A1 Valdes, Mariano A1 Roldan, Vanessa A1 Muñiz, Javier A1 Badimon, Lina A1 Roldan, Inmaculada A1 Bertomeu-Martinez, Vicente A1 Cequier, Angel A1 Lip, Gregory Y H A1 Anguita, Manuel A1 Marin, Francisco K1 Acenocoumarol K1 Atrial fibrillation K1 Bleeding risk scores K1 Electrical cardioversion K1 ORBIT AB Several bleeding risk scores have been validated in patients with atrial fibrillation (AF). The ORBIT score has been recently proposed as a simple score with the best ability to predict major bleeding. The present study aimed to test the hypothesis that the ORBIT score was superior to the HAS-BLED score for predicting major bleeding and death in "real world" anticoagulated AF patients. We analyzed the predictive performance for bleeding and death of 406 AF patients who underwent 571 electrical cardioversion procedures and 1,276 patients with permanent/persistent AF from the FANTASIIA registry. In the cardioversion population, 21 patients had major bleeding events and 26 patients died. The predictive performance for major bleeding of HAS-BLED and ORBIT were not significantly different (c-statistics 0.77 (95% CI 0.66-0.88) and 0.82 (95% CI 0.77-0.93), respectively; P=0.080). For the FANTASIIA population, 46 patients had major bleeding events and 50 patients died. The predictive performances for major bleeding of HAS-BLED and ORBIT were not significantly different (c-statistics 0.63 (95% CI 0.56-0.71) and 0.70 (95% CI 0.62-0.77), respectively; P=0.116). For death, the predictive performances of HAS-BLED and ORBIT were not significantly different in both populations. The ORBIT score categorized most patients as "low risk". Despite the original claims in its derivation paper, the ORBIT score was not superior to HAS-BLED for predicting major bleeding and death in a "real world" oral anticoagulated AF population. (Circ J 2016; 80: 2102-2108). PB Japanese Circulation Society YR 2016 FD 2016-08-24 LK http://hdl.handle.net/10668/10389 UL http://hdl.handle.net/10668/10389 LA en NO Esteve-Pastor MA, García-Fernández A, Macías M, Sogorb F, Valdés M, Roldán V, et al. Is the ORBIT Bleeding Risk Score Superior to the HAS-BLED Score in Anticoagulated Atrial Fibrillation Patients? Circ J. 2016 Sep 23;80(10):2102-8 DS RISalud RD Oct 31, 2025