Demographic characteristics of the Hounslow study population and the subpopulation stratified by AF diagnosis
| Characteristic | Study population (%) | AF subpopulation (%) |
| Registration status | ||
| Current | 276 239 (66.5) | 1728 (57.5) |
| Deceased, deducted | 7763 (1.9) | 520 (17.3) |
| Deducted | 131 624 (31.7) | 759 (25.2) |
| Sex | ||
| Female | 194 019 (46.7) | 1363 (45.3) |
| Male | 221 482 (53.3) | 1642 (54.6) |
| Other/unknown | 125 (0.0) | 2 (0.1) |
| Age | ||
| 0–19 | 88 891 (21.4) | 6 (0.2) |
| 20–29 | 66 519 (16.0) | 14 (0.5) |
| 30–39 | 88 967 (21.4) | 44 (1.5) |
| 40–49 | 62 116 (14.9) | 103 (3.4) |
| 50–59 | 46 612 (11.2) | 247 (8.2) |
| 60–69 | 30 577 (7.4) | 562 (18.7) |
| 70–79 | 18 763 (4.5) | 862 (28.7) |
| 80–89 | 10 158 (2.4) | 909 (30.2) |
| 90–99 | 2852 (0.7) | 251 (8.3) |
| 100+ | 171 (0.04) | 9 (0.3) |
| Ethnicity | ||
| Asian or Asian British | 118 460 (28.5) | 480 (16.0) |
| Black/African/Caribbean/Black British | 20 877 (5.0) | 71 (2.4) |
| Mixed/multiple ethnic groups | 11 215 (2.7) | 31 (1.0) |
| White | 168 017 (40.4) | 1958 (65.1) |
| Other ethnic group | 14 836 (3.6) | 53 (1.8) |
| Unknown | 82 221 (19.8) | 414 (13.8) |
AF, atrial fibrillation.