Table 1.

Participant demographics.

Participant ID	Ethnicity	Sex or gender identity	Type of expert	Self‐identified as from an under‐represented group?
1	White British	Female	PPI professional	No
2	Asian British	Female	PPI professional	Yes
3	White British	Female	Academic researcher	No
4	White British	Female	Young person	Yes
5	White British	Male	Academic researcher	No
6	White British	Cis male	PPI professional	Yes
7	White British	Female	Academic researcher PPI Professional Young person	No response provided
8	White British	Female	Academic researcher	Yes
9	Mixed–Black African and White	Female	Young person PPI professional	Yes
10	White British	Male	Young person	Yes
11a	British African‐Asian	Female	Young person	Yes
12	Asian	Male	Academic researcher	Yes
13	Indigenous native American	Female	Academic researcher	Yes
14	Indian	Female	Young person	Yes
15	White British	Female	Academic researcher	No
16	British	Female	Academic researcher PPI Professional Young person	Yes
17	White Asian	Female	Young person	Yes
18	White	Nonbinary	Young person	Yes
19b	White British	Female	PPI professional	Yes
20	White English	Man	Academic researcher	No
21	Asian	Female	Academic researcher PPI Professional Young person	Yes
22	White non‐British	Female	Young person	Possibly
23	Arab	Female	Young person	Yes
24	Asian Indian	Female	Academic researcher	Possibly
25	White British	Female	Academic researcher	No
26	White other	Male	PPI professional	No
27	White European	Female	Academic researcher	No

Note: All responses provided were free text rather than selection from a list.

^aParticipated in Rounds 1 and 2 but not Round 3.

^bParticipated in Round 1 only.