Study of the Conditions of the Effects of Health Mediation on Underserved Population

The investigators are conducting a longitudinal mixed-method intervention study with a multi-center, multi-case explanatory sequential design. The ECEMSo study aims to identify the impact of health mediation on fostering healthcare utilization, in particular organized cancer screening uptake, by underserved populations living in informal housing in France.

Health mediation may foster underserved populations' healthcare utilization. No study to date has demonstrated its effectiveness in an experimental context. The ECEMSo case study aims to identify the impact of health mediation on fostering healthcare utilization - in particular organized cancer screening uptake - by underserved populations living in informal housing in France. Grounded in a theory-based framework, the ECEMSo case study is a longitudinal mixed-method intervention study with a multi-center, multi-case explanatory sequential design. The study population comprises various participant profiles including health mediators, health workers, social workers, people living in informal housing whom these professionals support, and other stakeholders concerned with underserved populations' health issues. Participants will be recruited in several French regions and divided into three mixed participant profile groups. In group 1, health mediation and the ECEMSo intervention will be implemented. This intervention comprises knowledge mobilization to facilitate the structuring of health mediation throughout France, and the development of an action plan to facilitate cancer screening uptake by people living in informal housing. In group 2, only health mediation will be implemented (i.e., no ECEMSo intervention). In group 3, neither health mediation nor the ECEMSo intervention will be implemented, but health and social workers will implement other health system navigation interventions. Quantitative and qualitative data will be collected by interviewers through face-to-face questionnaires, interviews, observations, focus groups, and tracking tables of health mediation activities over six months. Data collection will be based on the health mediation conceptual framework.