The added value and unintended negative consequences of public involvement processes in the planning, development and implementation of community health services: Results from a thematic synthesis.

Added value of public involvement processes is primarily reported on an individual and service level. The added value seems to be accompanied by unintended negative consequences. Training of professional facilitators and recruitment of participants that come from vulnerable groups could help promote equality in public involvement. Unintended negative consequences need to be further explored in future evaluations in order to achieve the desired goals of public involvement.