RT Journal Article SR Electronic T1 Understanding implementation factors and participant experiences of a cluster randomised controlled trial to prevent falls among older Aboriginal people: a process evaluation protocol JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 293 OP 298 DO 10.1136/injuryprev-2020-043980 VO 27 IS 3 A1 Rona Macniven A1 Julieann Coombes A1 Roland Wilson A1 Aaron Simon A1 Tamara Mackean A1 Kate Hunter A1 Tracey Ma A1 Josephine Gwynn A1 Catherine Sherrington A1 Anne Tiedemann A1 Anne-Marie Hill A1 Kim Delbaere A1 Carolyn Lewis A1 Keziah Bennett-Brook A1 Adam Howie A1 Georgia Stewart A1 Madison Shakespeare A1 Kris Rogers A1 Rebecca Q Ivers A1 Kathleen Clapham YR 2021 UL http://injuryprevention.bmj.com/content/27/3/293.abstract AB Introduction Process evaluations examining programme implementation are often conducted in conjunction with effectiveness studies. Their inclusion in studies with Aboriginal participants can give an understanding of programme delivery in Aboriginal community contexts. The Ironbark: Standing Strong and Tall programme was codesigned with Aboriginal communities and includes exercise and facilitated ‘yarning’ discussion about fall risk and prevention strategies. The programme pilot showed favourable outcomes and acceptability for Aboriginal people aged 45 years and over. The Ironbark: Standing Strong and Tall programme is now being compared with a ‘Healthy Community’ programme in a cluster randomised controlled trial within Aboriginal health and community services. An embedded process evaluation aims to explore relationships between participation and programme outcomes and the quality of programme implementation.Methods and analysis The process evaluation will use a mixed methods design, guided by Indigenous research methodology. It will evaluate quantitative data (number of completed sessions, site coaching checklist tool, participant and facilitator questionnaire data and a participant habit formation scale), as well as qualitative data (open-ended responses from project and site staff and semistructured interviews using yarning with study participants and site managers). A programme logic model was developed to explain the intended inputs, activities, outputs and outcomes, which guided this process evaluation design.Conclusion This process evaluation of a fall prevention programme for older Aboriginal people using a mixed methods design and data triangulation will allow for a comprehensive understanding of study findings. Multiple study sites allow for generalisability of findings and exploration of variation across sites.Trial registration number ACTRN12619000349145.There are no additional data in this protocol.