According to the literature, malnutrition affects between 30% and 50% of hospitalized patients. The most recent survey on the prevalence of malnutrition in hospitals in France dates back to 2003, and at the Pitié Salpêtrière Hospital to 2015. Malnutrition is a pathological process that can lead to complications for patients and prolong their length of stay. Main objective: Evaluate the prevalence of malnutrition in adult patients hospitalized on a given day at Pitié-Salpêtrière Hospital (PSL) according to HAS ( High Authority for Health) criteria for 2019 (if age \<70 years) and 2021 (if age ≥ 70 years).
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Prevalence of undernutrition diagnosed according to HAS 2019 and 2021 criteria on a given day in hospitalized PSL patients.
Timeframe: 3 days