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What is the Geriatric Nutrition Index (GNRI)?

Malnutrition is a common but often under-recognized problem in hospitalized elderly patients, with some estimates suggesting a prevalence as high as 22 to 75% depending on the population studied. The Geriatric Nutrition Index (GNRI) is a simple, objective screening tool used to identify older adults at risk of malnutrition-related complications by using specific and readily available patient data.