Demographic characteristics and asthma history
| Characteristics (n=17) | Frequency, n (%) |
| Gender | |
| Female | 10 (59) |
| Male | 7 (41) |
| Age in years | |
| 18–29 | 5 (29) |
| 30–39 | 7 (41) |
| 40–49 | 2 (12) |
| 50–59 | – |
| 60–69 | 2 (12) |
| 70+ | 1 (6) |
| Recruitment channel | |
| Asthma UK newsletter | 7 (41) |
| Hospital | 1 (6) |
| Social media | 3 (17) |
| University College London newsletter | 3 (18) |
| Word of mouth | 3 (18) |
| Self-reported asthma severity | |
| Mild | 9 (53) |
| Moderate | 4 (24) |
| Severe | 3 (17) |
| Prefer not to disclose | 1 (6) |
| Self-reported hospitalisations for asthma (previous 12 months) | |
| 0 | 11 (65) |
| 1–4 | 3 (17) |
| 5–10 | 3 (17) |
| Self-reported GP visits for asthma (previous 12 months) | |
| 0 | 2 (12) |
| 1–10 | 13 (76) |
| 10–20 | 2 (12) |
GP, general practitioner.