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Interactive worksheet
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Clinical contextWhy this tool matters and how to interpret it
Understand the result,
not just the number.
Gait Nutritional Risk Index (NRI): Explanation and Clinical Context The Nutritional Risk Index (NRI) is a validated scoring system developed by Buzby et al. (1988) to assess the risk of malnutrition in hospitalized patients. It is calculated using the formula: NRI = (1.519 × serum albumin [g/dL]) + (41.7 × (current weight / usual weight)). Higher NRI values indicate better nutritional status, while lower values indicate increased nutritional risk.
The NRI can be classified as follows: > 100 (no risk), 97.5–99.9 (mild risk), 83.5–97.4 (moderate risk), and <83.5 (severe risk). This tool helps clinicians identify patients at risk for malnutrition, guide nutritional interventions, and monitor outcomes.
Evidence & references1 primary source mapped
- Source 1
Buzby GP, Mullen JL, Matthews DC, Hobbs CL, Rosato EF. Prognostic nutritional index in gastrointestinal surgery. Am J Surg. 1988;155(5):715-722. doi:10.1016/0002-9610(88)90395-6
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