| Population | No controls | Posts | Unique patients |
|---|---|---|---|
| Case SwedeHF | 0 | 416 | 144 |
| Case SwedeHF | 1 | 3860 | 1453 |
| Case SwedeHF | 2 | 259731 | 139555 |
Population
Patients registered in SwedeHF
All patients recorded in SwedeHF are included. This cohort includes patients up until 2024-12-31.
Patients with HF from the National Patient Register
Patients with an ICD-10 code for HF in main position in the National Patient Register (ICD-10: I110, I130, I132, I255, I420, I423, 1425-9, I43, I50, J81, K761) starting from 2000-01-01 with no previous ICD-9/10 code for HF (I110 I130 I132 I255 I420 I423 1425 I426 I427 I428 I429 I43 I50 J81 K761 ICD-9: 414W 425E 425F 425G 425H 425W 425X 428) since 1987. This cohort includes patients up until 2024-12-31.
Available upon request is a population defined from the above HF ICD-10 codes in any position from 2000-01-01.
HF-free controls
For each post in SwedeHF a set of controls was chosen by Statistics Sweden in a ratio of 2:1. Since a person can have more than one registered post in SwedeHF a patient can have more than 2 controls in total, up to 2 for each posts. This cohort includes patients up until 2024-12-31.
Eligible controls were persons without re-used Swedish personal identity numbers (PINs) and free of HF, defined either in the National Patient registry (ICD-10: I110, I130, I132, I255, I420, I423, 1425-9, I43, I50, J81, K761, R570, ICD-9: 414W, 425E-H, 425W, 425X, 428) or SwedeHF, at the end of the year of the index date for the case and matched by gender, year of birth and county of residence at index. For posts with age ≥ 90 years, controls were only matched by gender and year of birth due to the smaller available number of controls.
The selection of controls was performed without replacement.
A control was allowed to become a case after the year of the index date for the case.
A full set of controls (n = 2) was not found for all cases:
Inclusion/exclusion criteria
| Criteria | Case SwedeHF | Case NPR | Control SwedeHF |
|---|---|---|---|
| No of posts recieved | 270768 | 500193 | 539009 |
| Exclude posts with duplicated index dates | 270145 | ||
| Exclude posts with index date < 2000-01-01 | 270142 | 500193 | 539009 |
| Exclude posts with index date > 2024-12-31 | 264618 | 500193 | 527988 |
| Exclude posts < 18 years | 264602 | 498636 | 527956 |
| Exclude posts with reused or incorrect PINs | 264302 | 498143 | 527956 |
| Exclude posts end of follow-up < index | 264007 | 496907 | 524038 |
| Exclude posts with end of follow-up <= index date (died in hospital) | 260668 | ||
| Unique patients | 139072 |