<qa>  What is the goal of the study?Background : The transitional care OMAGE-P combines three best practices recommendations from the French National Authority for Health HAS i a comprehensive review of diagnosis and treatments ii a standardized medical report and iiia patient education program specifically designed for older people with multiple chronic conditions and polypharmacy. This transitional care is implemented in a pilot general hospital with the support of French ministry of Health and Regional Agency for Health of Ile de France .The aim of the study is to assess the impact of the OMAGE P transitional care on the readmissions of non demented older people aged 75 years and over within the 3 months following their discharge to home and its cost-effectiveness Study Population: non demented people aged 75 years and over admitted in emergency ie via an emergency department in the participating units 