Though the interest in community engagement in research (CEnR) protocols has increased, studies reporting on the findings of tested CEnR engagement measurement scales for health studies are sparse. A systematic review was conducted from January 1 to March 1, 2023, to identify validated, quantitative CEnR engagement measurement tools for health studies. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology was employed. The rigor of scale development, testing, and implementation was explored, and a `best practices evaluation conducted. Themes on the readiness of scales for implementation in health research studies were narratively compiled. Nineteen studies met the search inclusion criteria-reporting on the development, testing, and implementation of seven CEnR engagement measurement scales for health studies. Scale implementation studies precipitated only two of the studies. None of the scales followed the rigorous process dictated in best practices; however, at this time, three scales have gone through the most robust testing processes. Advancement of the science of engagement measurement requires consensus on terminology, application of best practices for scale development and testing protocols, and consistency of reporting findings.
Keywords: community engagement in research; engagement measurement scales; science of engagement measurement; stakeholder engagement measurement.