The Ebrictus group is accredited by AGAUR as a consolidated group.Among the activities carried out to achieve its objectives are: 1/ To increase the knowledge of the state of population health in Terres de l’Ebre.2/ To increase the knowledge of cerebrovascular disease, its epidemiology and prevention: the increase in the incidence of stroke due to the aging of the population (epidemiological and demographic context; new cardiovascular technology in its treatment (care context), its consequences in the form of residual disability, dependence in the ABVD and the need for care (socio-health context; and the associated direct and indirect costs (cost-effectiveness context).