Background and aims
Malnutrition is a common issue among hospitalized diabetic patients, often leading to poor outcomes. The Nutritional Risk Screening 2002 (NRS-2002) is a widely used tool for assessing nutritional risk, but its relevance to diabetic patients and correlation with clinical parameters are unclear. This study aims to assess the prevalence of nutritional risk in hospitalized diabetic patients using NRS-2002, explore its relationship with key clinical indicators, and identify independent factors influencing nutritional risk for better management strategies.
Methods
This single-center retrospective study included 329 diabetic inpatients from the Department of Endocrinology at Yuncheng Central Hospital, affiliated with Shanxi Medical University, between December 2022 and June 2025. Data from the Electronic Medical Record (EMR) and Laboratory Information System (LIS) covered demographics, clinical features, anthropometrics, laboratory parameters (nutritional markers, lipids, pancreatic enzymes, inflammatory and metabolic indicators), and comorbidities. Nutritional risk at admission was assessed using NRS-2002 (score ≥3). Associations with clinical indicators were analyzed using Spearman correlation and logistic regression to identify independent predictors.
Results
Of the 329 patients, 91 (27.7 %) were at nutritional risk. This group had longer hospital stays, a higher proportion of patients with diabetes duration <5 years, lower BMI, prealbumin, and albumin levels, and higher CRP and HbA1c levels. They also had increased infection and ketosis rates. NRS-2002 scores were positively correlated with ketosis (ρ = 0.468), HbA1c (ρ = 0.386), and infection (ρ = 0.236), and negatively correlated with prealbumin (ρ = −0.404), bicarbonate (ρ = −0.240), and BMI (ρ = −0.205). Multivariate logistic regression identified ketosis (OR = 3.714), HbA1c (OR = 1.265), prealbumin (OR = 0.990), and bicarbonate (OR = 0.896) as independent predictors of nutritional risk. The predictive model showed good performance with an AUC of 0.832.
Conclusion
The NRS-2002 tool effectively assesses nutritional risk in hospitalized diabetic patients, with significant correlations to metabolic issues, inflammation, and complications. Low prealbumin, low bicarbonate, high HbA1c, and ketosis were independent predictors of nutritional risk.
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