Table 1.

Participant characteristics

Participant ID	Gender	Ethnicity*	Age range (years)	Role	Years of experience of early-phase trials†	Clinical area of experience
Participant 1	Male	Not collected	25-34	Professional (operational lead at a CTU)	6–10	Cancer
Participant 2	Female	Not collected	45–54	Professional (doctor)	>16	Cancer
Participant 3	Female	Black African	55–64	Patient and public representative	Not collected	Cancer
Participant 4	Female	Not collected	45–54	Professional (statistician)	11–15	Cancer
Participant 5	Male	Not collected	35–44	Professional (statistician)	6–10	Cancer
Participant 6	Female	British Chinese	65–74	Patient and public representative	Not collected	Cancer
Participant 7	Female	White Canadian	35–44	Patient and public representative	Not collected	Neurological
Participant 8	Female	Not collected	35–44	Professional (nurse)	11–15	Cancer

*Ethnicity only collected for the patient and public representatives.

†Only collected for professional participants.

CTU, clinical trials unit.