Since July 2013, the Nantes University Hospital experiences the establishment of a coordinator route patient in Gerontology. The evaluation program of the benefit of coordinating the course in elderly patients in health establishment (PROCOPES) must allow to prove the efficiency of the intervention of a coordinator route patient, following elderly patients in complex situations, both within the hospital and outside the hospital (home, nursing home,...). The objective of PROCOPES is to show the added value of an innovative position that can make the link between the hospital and the city on deemed complex situations.The pilot study results present a strong interest for health care settings, nursing home and in the world of research. It will also permit to have preliminary data for bigest studies.