Table 2. Positive predictive value of advanced heart failure treatments in the Danish National Patient Registry, compared with medical record review, 2017–2022.
| Treatment | First-time heart failure | Positive predictive value (95% CI), % | |
| Confirmed, n | Reviewed, n | ||
| Implantable cardioverter-defibrillator (ICD) | 97 | 199 | 97 (91–99) |
| Cardiac resynchronisation therapy pacemaker (ICD-P) | 48 | 50 | 96 (86–100) |
| Cardiac resynchronisation therapy defibrillator (ICD-D) | 44 | 50 | 88 (76–95) |
| Left ventricular assist device (LVAD) | 20 | 20 | 100 (83–100) |
| Intra-aortic balloon pump (IABP) | 6 | 14 | 43 (18–71) |
| Impella | 19 | 50 | 38 (25–53) |
| Cardiopulmonary support (CPS) | 50 | 50 | 100 (93–100) |
| Heart transplantation (HTx) | 56 | 56 | 100 (94–100) |
Abbreviation: CI, confidence interval.