| Demographic data | Age | In full years | Medical record |
| Gender | Male or female | Medical record |
|
| Baseline clinical characteristics | Multimorbidity | Yes if more than 2 chronic diseases | Medical record |
| Charlson Comorbidity Index | Using MDCalc software | Medical record |
| Previously diagnosed heart failure | Yes if any evidence | Medical record |
| Current therapy | Number of all prescribed medicines | Medical record |
| Start-point health barometer | Self-evaluated | Interview |
| Start-point NYHA | On scale I–IV | Interview and clinical examination |
| History of coronary artery disease | Yes if any evidence | Medical record |
|
| Clinical history | History of arterial hypertension | Yes if any evidence | Medical record |
| Exposition to cardiotoxic drugs/radiation | Yes if any evidence | Medical record |
| Use of diuretics | Yes if any evidence | Medical record |
| Orthopnoea / paroxysmal nocturnal dyspnoea | Yes if declared or any evidence | Interview or medical record |
|
| Signs of heart failure | Rales | Yes if bilateral | Clinical examination |
| Bilateral ankle oedema | Yes if bilateral | Clinical examination |
| Heart murmur | Yes if heard | Clinical examination |
| Jugular venous dilatation | Yes if observed in sitting position | Clinical examination |
| Laterally displaced / broadened apical beat | Yes if felt | Clinical examination |
|
| Diagnostics of heart failure | ECG | Any abnormality | Study |
| NT-proBNP | Positive if ≥125 pg/mL | Study |
| Echocardiography | Categorisation in HFrEF, HFmrEF, HFpEF | Study |
|
| Outcomes | Events related to HF deterioration | The need for the iv diuretic, the emergency service intervention, hospitalisations for non-injury cause or death | Study |
| Days to deterioration of heart failure | For any event related to HF deterioration | Study |
| Change in health barometer | Self-evaluated | Study |
| Change in NYHA class | On scale I–IV | Study |
| Days in hospital due to heart failure | For HF deterioration only | Study |
| Days alive and out of hospital | Excluding hospital days for whatever cause | Study |
|
| Workload | Days alive | Time to death for whatever cause | Study |
| Non-administrative contacts | All and HF related | Study |
| Therapy modifications | All and HF related | Study |
| Unplanned referrals | All and HF related | Study |
