A comparative study of three nutritional risk screening tools in surgical inpatients with laryngeal cancer

Nutritional screening has been recommended for hospitalized patients. The goal of this study was to compare the screening value of Nutritional Risk Screening 2002 (NRS-2002), Malnutrition Universal Screening Tool (MUST), and Malnutrition Screening Tool (MST) in inpatients with laryngeal cancer, and to identify which is the most accurate.

An observational cross-sectional study of 197 laryngeal cancer patients admitted for surgery was conducted using continuous sampling. NRS-2002, MUST, and MST were used to screen the nutritional risk of patients after admission and before discharge. Diagnostic information and the length-of-hospital stay (LOS) data were extracted from the hospital HIS system.

The detection rates of NRS-2002, MUST, and MST in admission or discharge patients were 14.7%/27.9%, 22.3%/26.9%, and 4.6%/11.2%, respectively. Using NRS-2002 as the reference, high sensitivity (82.8%) and a Kappa coefficient (k=0.584) were achieved using MUST in admission patients, while MST presented the lowest sensitivity (17.3%) and Kappa coefficient (k=0.208). MST maintained low sensitivity (25.5%) and Kappa coefficient (k=0.243) in discharge patients. NRS-2002 ≥3 was an independent risk factor for longer LOS in patients with laryngeal cancer (odds ratio (OR)=5.59, 95% confidence interval (CI)=1.86-16.81, p=0.002). The MUST and MST scores did not predict long LOS.

Compared with NRS-2002, MUST is superior to MST in sensitivity, specificity, and Kappa coefficient. NRS-2002 better identified patients at risk for longer LOS, but a consistent conclusion was not reached with MUST and MST. Further validation in larger samples is needed.