Gender | Female | 8 | 2 |
| Male | 7 | 11 |
Ethnicity (free text) | White, European | 1 | 0 |
| White | 3 | 3 |
| White British | 8 | 7 |
| English | 1 | 0 |
| Asian | 1 | 1 |
| British | 1 | 1 |
| Caucasian | 0 | 1 |
Age (years) | 30 or younger | 1 | 1 |
| 31–35 | 0 | 3 |
| 36–40 | 5 | 2 |
| 41–45 | 0 | 2 |
| 46–50 | 1 | 2 |
| Older than 50 | 8 | 3 |
Highest academic qualification | Doctorate | 1 | 8 |
| Post-graduate degree (Masters) | 2 | 5 |
| Registered nurse & registered midwife | 1 | 0 |
| Undergraduate degree | 6 | 0 |
| Undergraduate degree, teaching certificate | 1 | 0 |
| General Certificate of Secondary Education | 1 | 0 |
| NA | 3 | 0 |
Have you ever participated in a clinical trial? | No | 9 | - |
| Yes | 6 | - |
Have you ever been a member of a public involvement group? | No | 5 | - |
| Yes | 10 | - |
Experience in clinical trials research (years) | 11–15 years | - | 5 |
| 16–20 years | - | 1 |
| 5–10 years | - | 1 |
| Less than 5 years | - | 2 |
| More than 20 years | - | 3 |
| NA | - | 1 |
Current employment sector | Private | - | 6 |
| Public | - | 7 |
Location | United Kingdom | - | 11 |
| United States of America | - | 2 |
Area of expertise (can choose multiple) | Clinician | - | 1 |
| Health economics | - | 8 |
| Health services research | - | 1 |
| Value of information analysis | - | 2 |
| Adaptive designs | - | 3 |
| Clinical trial management | - | 1 |
| Statistics | - | 5 |