Study of Patient Navigation to Reduce Social Inequalities

Inclusion Criteria: * Insured people invited to the national french colorectal screening program are from 50 to 74 years old. * We select people who never do the screening test or are not compliant with it * Among these people we select those living in the randomized geographical areas. Exclusion Criteria: * people who have already done the screening test at the two previous campaigns. * people who have done a colonoscopy in the previous five years or people with a family history with colorectal cancer and people who are following outside of the screening program. * people with other severe disease or in incapacity to realize the screening test * people who have another exclusion criteria to realize the screening test.