Variable;Column;Notes;Codes
Exit of the study;D;Cause of exit from the study;"0: survivor; "
;;;"1: lost to follow-up;  "
;;;"2: cardiac transplantation; "
;;;"3: Death; "
;;;According to closing date of the study
Cause of death;E;Cause of death;"0: survivor; "
;;;"1: non-cardiac death;  "
;;;"3: SCD; "
;;;"6-7: Pump-failure death; "
;;;According to closing date of the study
HF etiology - Diagnosis;P;Previous heart failure etiology;1: Idiopathic dilated cardiomyopathy
;;;2: Ischemic dilated cardiomyopathy
;;;3: Enolic dilated cardiomyopathy
;;;4: Valvular cardiomyopathy
;;;5: Toxic dilated cardiomyopathy
;;;6: Post-myocardial dilated cardiomyopathy
;;;7: Hypertrophic cardiomyopathy
;;;8: Hypertensive cardiomyopathy
;;;9: Other
Prior implantable device;V;;0: No
;;;1: Pacemaker-I
;;;2: Pacemaker-II
;;;3: Pacemaker-III
;;;4: CRT-I
;;;5: ICD
;;;6: Unknown device
;;;8: CRT-II
Prior Revascularization;W;;0: No
;;;1: Percutaneous revascularization
;;;2: Surgical revascularization
;;;3: Both
Syncope;X;;0: NO
;;;1: Yes, but not documented/studied
;;;2: Yes, documented and studied
Mitral valve insufficiency ;BC;;0: No
;;;1: I/IV
;;;2: II/IV
;;;3: III/IV
;;;4: IV/IV
Mitral flow pattern;BD;;0: Normal
;;;1: Impaired 
;;;2: Pseudonormal
;;;3: Restrictive
;;;9: Others
ECG rhythm ;BJ;Dominant rhythm in 20 min high-resolution ECG;"0: Sinusal; "
;;;"1: Permanent AF; "
;;;"2: Atrial flutter; "
;;;3: Pacemaker
Intraventricular conduction disorder;BS;;1: Right bundle branch block (RBBB)
;;;2: Left bundle branch block (LBBB)
;;;3: Hemibloqueo anterosuperior (HBA)
;;;4: Hemibloqueo posteroinferior (HBP)
;;;5: RBBB+HBA
;;;6: RBBB+HBP
;;;7: Others
Holter  rhythm ;BV;Dominant rhythm in Holter ECG;"0: Sinusal; "
;;;"1: Permanent AF; "
;;;"2: Atrial flutter; "
;;;3: Pacemaker
Ventricular Extrasystole;CC;;0: No
;;;1: Monomorphic
;;;2: Polymorphic
;;;3: Couplets
Ventricular Tachycardia;CD;;0: No
;;;1: Non-sustained VT
;;;2: Sustained VT
;;;3: Torsade de Points
Paroxysmal supraventricular tachyarrhythmia;CH;;0: No 
;;;1: TPSV 
;;;2: Parosysmal AF 
;;;3: Paroxismal flutter 
;;;4: others
;;;9:NAxFA crónica
Bradycardia;CJ;;0: No
;;;1: Sinus Node Dysfunction
;;;2: First-degree Atrioventricular block (AVB)
;;;3: Second-degree AVB - type I
;;;4: Second-degree AVB - type II
;;;5: Third-degree AVB
;;;6: Paroxysmal AVB