Participant characteristics (patients)
| Characteristics | (n) | % |
| Gender | ||
| Female | 8 | 40 |
| Male | 12 | 60 |
| Age (years) | ||
| 41–50 | 2 | 10 |
| 51–60 | 4 | 20 |
| 61–70 | 11 | 55 |
| 71–80 | 3 | 15 |
| Ethnicity | ||
| Asian or Asian British-Indian | 1 | 5 |
| Asian or Asian British-Pakistani | 1 | 5 |
| Black or Black British-Caribbean | 1 | 5 |
| White British | 17 | 85 |
| Phone use | ||
| SMS text messages only | 4 | 20 |
| SMS text messages and smartphone app | 16 | 80 |
| Data collection method | ||
| Semistructured interview | 6 | 30 |
| Focus group | 14 | 70 |
n=20.
SMS, short message service.