Participants’ demographic characteristics
| Characteristic | Interview study participants, n = 20 | Total trial population, n = 80 |
|---|---|---|
| Age, years | ||
| Mean (range) | 56 (29–79) | 51 (25–81) |
| Sex | ||
| Female, n (%) | 16 (80) | 64 (80) |
| Ethnicity | ||
| White, n (%) | 16 (80) | 57 (71) |
| Education | ||
| No formal qualifications, n (%) | 10 (50) | 20 (25) |
| School-age qualifications, n (%) | 3 (15) | 40 (50) |
| Degree or higher qualifications, n (%) | 7 (35) | 20 (25) |
| Social class | ||
| 0 (never worked), n (%) | 0 (0) | 3 (4) |
| 1, n (%) | 0 (0) | 3 (4) |
| 2, n (%) | 4 (20) | 25 (31) |
| 3M, n (%) | 3 (15) | 8 (10) |
| 3N, n (%) | 8 (40) | 22 (28) |
| 4, n (%) | 4 (20) | 18 (22) |
| 5, n (%) | 1 (5) | 1 (1) |