Table 1.
Characteristics of participants with heart failure and matched participants without heart failure from The Health Improvement Network (THIN) database between 1 January 1998 and 31 December 2012
| Characteristic | Heart failure (n = 54313) | No heart failure (n = 254809) |
|---|---|---|
| Age (years) | ||
| 45–54 | 1738 (3.2%) | 8685 (3.4%) |
| 55–64 | 5268 (9.7%) | 26323 (10.3%) |
| 65–74 | 12127 (22.3%) | 60308 (23.7%) |
| 75–84 | 20942 (38.6%) | 100184 (39.3%) |
| 85–94 | 13021 (24.0%) | 55311 (21.7%) |
| ≥95 | 1217 (2.2%) | 3998 (1.6%) |
| Male | 27983 (51.5%) | 130413 (51.2%) |
| Townsend score | ||
| 1 | 10935 (20.1%) | 59001 (23.2%) |
| 2 | 11156 (20.5%) | 55974 (22.0%) |
| 3 | 11089 (20.4%) | 50893 (20.0%) |
| 4 | 10864 (20.0%) | 45959 (18.0%) |
| 5 | 7940 (14.6%) | 31956 (12.5%) |
| Not known | 2329 (4.3%) | 11026 (4.3%) |
| BMI | ||
| Mean (SD) | 27.9 (5.9) | 26.4 (4.7) |
| Missing | 8664 (16.0%) | 51692 (20.3%) |
| Smoking status | ||
| Smoker | 7656 (14.1%) | 32803 (12.9%) |
| Not current smoker | 43198 (79.5%) | 196407 (77.1%) |
| Missing | 3459 (6.4%) | 25599 (10.1%) |
| Diabetes | 10729 (19.8%) | 27483 (10.8%) |
| Hypertension | 28820 (53.1%) | 106661 (41.9%) |
| Angina | 12522 (23.1%) | 28656 (11.3%) |
| Myocardial infarction | 12282 (22.6%) | 16339 (6.4%) |
| Ischaemic heart disease | 23308 (42.9%) | 43803 (17.2%) |
| Stroke | 4969 (9.2%) | 14983 (5.9%) |
| Atrial fibrillation | 15473 (28.5%) | 17969 (7.1%) |
| Valvular disease | 5522 (10.2%) | 6281 (2.5%) |