[Bridging research and practice in public health services: lessons learned from the EvidenzOGD trainee rotation program].

introductionA science-based approach in local public health services (PHS) requires robust structures both for generating practice-relevant research and for integrating this knowledge into routine public health practice. To strengthen this interface, an academia-practice research consortium developed, piloted, and evaluated the part-time trainee-rotation program "EvidenzOGD."

methodsThe formative process evaluation of the six-month pilot was guided by a theory-based logic model and employed a mixed-methods design, including document analysis, standardized online surveys, and workshops. Findings were synthesized using method and data triangulation.

resultsTrainees and mentors reported substantial gains in competencies and identified impulses for anchoring sustainable evidence transfer. At the institutional level, new forms of cooperation and structural developments were initiated. At the same time, several areas for improvement emerged, including an overly short rotation period, high documentation workload, unclear role expectations, and coordination challenges. These issues were systematically addressed, leading to adaptations of key program components, such as the rotation structure, the implementation of a unified logbook, the expansion of the training modules, and the improved integration of the trainee research project. DISCUSSION: The program is considered a promising approach to promoting evidence-informed practice and strengthening institutional cooperation within the PHS. Its modular structure allows for flexible implementation in different local contexts. Future research should explore its long-term effects on competency development and the institutionalization of evidence-based approaches.