Table 3.

Interim survey respondent roles

	Number	Percentage
Which one of the following best describes your main role in a randomised trial?
Frontline staff or other staff involved or invested in trial retention (e.g. Research Nurse, Trial Manager, regulatory or oversight role such as Sponsor or Research Director)	403	46
Investigator (e.g. Chief Investigator, Principal Investigator, Co-investigator)	225	26
Patient or public member involved in a trial (as a participant or parent/carer of a participant, or as a contributor to design/delivery of trial)	174	20
Trial methodologist	68	8
Total	870	100
Where do you usually live?
England	590	68
Scotland	102	12
Wales	72	8
The Republic of Ireland	51	6
Other	30	3
Northern Ireland	19	3
Total	864	100