Extended data for the paper Thomson G, Ceballos Rasgado M, Harris C, and Schroeder D. (2025) Engaging and supporting Community Researchers in Low and Middle-Income Countries: An Integrative Review. This record contains the following extended data: Supplementary File 1 - Search strategies Supplementary File 2 PRISMA Checklist Supplementary File 3 - Table 1 Study community researchers and study participant characteristics Supplementary File 4 – Table 2 Recruitment, involvement and training of community researchers