Evaluation of a participatory action project to address opioid misuse: Breaking down barriers through partnership processes

Community based participatory research and participatory action research are increasingly being used to engage communities in addressing social and health disparities. There is a need to develop broadly applicable evaluation methods that can be used across participatory project environments to identify the processes critical for addressing complex public health issues, as well as the productiveness of community research partnerships. We present a case study of a community participatory project conducted over three years and our evaluation approach. We used the Community Based Participatory Research Conceptual Model as the framework for the evaluation surveys (n=9) and interviews (n=7) with project participants, querying perspectives on the four model domains: community context, partnership processes, intervention and research and outcomes. In addition, we conducted a Ripple Effects Mapping (REM) exercise with ten community members to determine the broader impacts of the project on the community. This mixed-methods approach permitted us to confirm findings from quantitative surveys with qualitative findings from interviews and the REM. Key processes identified as facilitators to a productive partnership and positive outcomes include a context of trust, effective implementation of processes that establish equitable partner relationships and partnership synergy, a clearly defined focus for the partnership and a structured participatory research method that helped break down silos and mobilise the community for action. Our project evaluation approach, combining the CBPR model and REM, guided measurement of common metrics that are key to effective community engagement as well as exploration of unanticipated outcomes.