| Variables | Groups of related variables | Mean (SD) or N (%) | |
| Femaleb,d | - | 1219 (19.7%) | |
| Agea | - | 66.94 (10.76) | |
| Years of school educationd | - | 7.00 (3.77) | |
| Weight | Obesity | 76.25 (14.76) | |
| BMIa | 26.96 (4.46) | ||
| Smoker or ex-smokerb,d | - | 3425 (55.3%) | |
| Heart rate | - | 70.22 (13.25) | |
| Diastolic blood pressure | Blood pressure | 77.37 (10.29) | |
| Systolic blood pressure | 127.16 (18.75) | ||
| Mean blood pressurea | 93.96 (12.07) | ||
| NYHAc (ref: “NYHA I”) | ≥II | NYHA | 5671 (91.6%) |
| ≥III | 1017 (16.4%) | ||
| ≥IV | 46 (0.74%) | ||
| Peripheral edemac,d (ref: “No”) | ≥Ankles | Peripheral edema | 732 (11.8%) |
| ≥Knee | 106 (1.7%) | ||
| ≥Above | 33 (0.5%) | ||
| Main cause of HFb (ref: “Ischemic”) | Cardiomyopathy | - | 1866 (30.2%) |
| Hypertension | - | 956 (15.4%) | |
| Other | - | 178 (2.9%) | |
| Not known | - | 133 (2.1%) | |
| Ascitesb,d | - | 21 (0.3%) | |
| Hepatomegalyb,d | - | 914 (14.8%) | |
| Mitral insufficiencyb,d | - | 2647 (42.8%) | |
| CVP > 6 cm H20b,d | - | 467 (7.5%) | |
| Basal pulmonary ralesb,d | - | 738 (11.9%) | |
| Mid-apical pulmonary ralesb,d | - | 51 (0.8%) | |
| Pulmonary ralesb,d | - | 263 (4.3%) | |
| Aortic stenosisb,d | - | 105 (1.7%) | |
| Third heart sound (S3)b,d | - | 945 (15.3%) | |
| Hematocrit | Hematology | 40.58 (4.35) | |
| Hemoglobin | 13.60 (1.56) | ||
| ePVSa | 4.47 (0.89) | ||
| Serum creatinine | Renal function | 1.21 (0.42) | |
| eGFRa | 67.59 (22.79) | ||
| Serum potassium | - | 4.47 (0.50) | |
| Serum sodium | - | 139.65 (3.45) | |
| Uricemia | - | 6.39 (1.84) | |
| Triglycerides | - | 147.31 (110.90) | |
| Cholesterol HDL | Cholesterol | 49.15 (13.62) | |
| Total cholesterol | 180.67 (44.55) | ||
| Bilirubin | - | 0.81 (0.56) | |
| Glycemia | - | 119.61 (46.53) | |
| NT-proBNPf | - | 1312.57 (1978.60) | |
| Diabetes mellitusb,d | - | 1535 (24.8%) | |
| Hypertensionb,d | - | 3390 (54.8%) | |
| Previous AMIb,e | - | 2649 (42.8%) | |
| Previous strokeb,e | - | 293 (4.7%) | |
| Previous hosp. for worsening HFb,e | - | 3068 (49.6%) | |
| Angina pectorisb,e | - | 968 (15.6%) | |
| Coronary angioplastyb,d | - | 792 (12.8%) | |
| Transient ischemic attack (TIA)b,d | - | 500 (8.1%) | |
| COPDb,d | - | 1074 (17.4%) | |
| CABGb,e | - | 1321 (21.3%) | |
| Implantable defibrillatorb,d | - | 488 (7.9%) | |
| Paroxystic AFb,d | - | 1174 (19.0%) | |
| Neoplasiab,d | - | 242 (3.9%) | |
| Definitive pace makerb,d | - | 824 (13.3%) | |
| Waiting for cardiac transplantationb,d | - | 38 (0.6%) | |
| LVEFd | - | 33.56 (9.74) | |
| Bundle branch blockb | - | 2007 (32.4%) | |
| Atrial fibrillationb | - | 911 (14.7%) | |
| Left ventricular hypertrophyb | - | 1031 (16.7%) | |
| Pathological Q wavesb | - | 1200 (19.4%) | |
| Normal ECG evaluationb | - | 289 (4.7%) | |
| ACE-inhibitorsa,b | - | 4848 (78.3%) | |
| Beta-blockersa,b | - | 4434 (71.6%) | |
| Calcium antagonistsa,b | - | 509 (8.2%) | |
| Diureticsa,b | - | 5689 (91.9%) | |