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. 2026 Jul 23;12:118. doi: 10.1186/s40900-026-00940-2

Table 2.

Characteristics of patient and public involvement in 97 studies

Information regarding patient and public involvement No. of Studies
N = 97
Who Was Involved?†
 Patient partners 54 (55.7)
 Caregivers or family members 20 (20.6)
 Community partners 18 (18.6)
 Patient or public organizations 29 (29.9)
 End-users, clinical staff 34 (35.1)
How Were They Involved?
 Leadership role 9 (9.3)
 Membership role 54 (55.7)
 Consultation role 34 (35.1)
What Aspects Were They Involved In?†
 Choosing/developing research question(s) to ensure relevant research 17 (17.5)
 Study protocol development (including REB submission) 42 (43.3)
 Grant application to funding agency 11 (11.3)
 Selection of primary or secondary outcomes 15 (15.5)
 Intervention design and/or delivery 56 (57.7)
 Recruitment and/or retention strategies 23 (23.7)
 Patient-facing materials design and/or development 44 (45.4)
 Data collection 8 (8.2)
 Data analysis 2 (2.1)
 Interpretation of findings 17 (17.5)
 Review or editing of manuscript, reports or lay summaries 16 (16.5)
 Co-authorship of manuscript, reports or lay summaries 7 (7.2)
 Dissemination of findings (e.g., social media promotion, conferences) 13 (13.4)
 Evaluation of PPI impact in the primary study 1 (1.0)
When Were They Involved?
 Phase 1 – study conception 9 (9.3)
 Phase 2 – study preparation 18 (18.6)
 Phase 3 – study execution 13 (13.4)
 Phase 4 – data analysis 0 (0.0)
 Phase 5 – reporting of findings 4 (4.1)
 Throughout study: phases 1–5 45 (46.4)
 >1 phase 7 (7.2)
 Undefined 2 (2.1)
Recognition of Patient Partner(s) in published manuscript
 No 7 (7.2)
 in main text only 33 (34.0)
 in Acknowledgements section 48 (49.5)
 co-author (named) 6 (6.2)
 co-author (group) 3 (3.1)
Level of Engagement based on IAP2 Spectrum
 Consult 26 (26.8)
 Involve 27 (27.8)
 Collaborate 35 (36.1)
 Empower 9 (9.3)

†more than one option per study possible