The Chroniberia index is calculated from only five variables: age, sex, neoplasia, Barthel index, and presence of atrial fibrillation.
Neoplasia: active solid or hematological neoplasia not subsidiary to treatment with curative intent Ministry of Health and Social Policy. Patients polypathological unit. Standards and recommendations. Madrid. 2009 Available from http://www.mscbs.gob.es/organizacion/sns/planCalidadSNS/docs/EyR_UPP.pdf .
Atrial fibrillation: includes paroxysmal, persistent or permanent AF with CHA2DS2-VASc ≥2 in men and ≥ 3 in women (evidence class I A). 2020 ESC Guidelines for the diagnosis and management of atrial fibrillation developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS). European Heart Journal (2020) 42, 373-498 doi:10.1093/eurheartj/ehaa612