| Recruitment method | Registrations (n = 31,052) | Randomised (n = 21,095) |
|---|---|---|
| Radio | 73 | 65 |
| Friends/relatives | 97 | 62 |
| Web search | 101 | 58 |
| From GP | 22,894 | 16,066 |
| MEMO website | 105 | 46 |
| Practice poster | 271 | 170 |
| TIME video (YouTube) | 13 | 6 |
| Medscape | 8 | 3 |
| BHF Heart Matters | 338 | 253 |
| Pharmacy | 27 | 16 |
| Newspaper | 18 | 9 |
| Hospital or clinic | 944 | 619 |
| Biobank | 5358 | 3243 |
| GoShare | 55 | 34 |
| Other | 667 | 409 |
| No Answer provided | 83 | 36 |