Impact of Hospital Admission on Patients With Dementia

People with dementia have complex medical, social, and psychological needs and can be exacerbated by physical illness and the complex relationships between health care systems, patients and their families or caregivers. They are a vulnerable and fragile population that differs significantly from the population without dementia. Therefore, the investigators propose the following objectives: 1. To describe the evolution of dementia patients admitted during the study period in two hospitals in the Basque Health Service-Osakidetza and complications associated with such admissions. 2. To compare with a control group (matched by type of pathology, age and sex and adjusting for other clinical variables (severity of dementia ...) the patient's condition before and after admission, in terms of quality of life, dependency, instrumental activities of daily living and severity of dementia. 3. To compare the length of stay, complications, mortality rate, the degree of dependency and quality of life of patients with dementia compared to those without dementia, matched by groups of pathologies, gender and age.