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.

People living in informal housing Inclusion criteria: * Living on the streets, in a shanty house, squat or caravan * Living in an area covered by one of care structures participating in the ECEMSo study * Being over 18 years old * Being able to understand the detailed information provided about the ECEMso study Exclusion criteria: * Suffering from cognitive and/or psychiatric disorders * Being under guardianship or curatorship Health mediators, heal workers, socials workers Inclusion criteria: * Being a health mediator, a health worker or a social worker belonging to one of the study's participation care structures * Providing support to people living in informal housing Exclusion criteria: No Stakeholder: Inclusion criteria: Being an actor concerned or involved with the issues and needs of people living in informal housing Exclusion criteria: No