Nutritional risk assessed by the Malnutrition Universal Screening Tool as a predictor of frailty in acutely hospitalised older patients: An observational study.

Background And Objectives: Frailty and malnutrition are overlapping geriatric syndromes and leads to poor clinical outcomes in older patients. This study determined whether Malnutrition Universal Screening Tool (MUST) can predict frailty in older hospitalised patients.

Methods And Study Design: This prospective study recruited 243 patients ≥65 years in a tertiary-teaching hospital in Australia. Frailty assessment was performed by use of the Edmonton-Frail-Scale (EFS), while malnutrition-risk was determined by use of the MUST. Patients with an EFS score >8 were classified as frail, while patients with a MUST score of 1 as at moderate malnutritionrisk and ≥2 as at high malnutrition-risk. Multivariable logistic regression determined whether malnutrition-risk predicts frailty after adjustment for various co-variates.

Results: The mean (SD) age was 83.9 (6.5) years) and 126 (51.9%) were females. One-hundred and forty-nine (61.3%) patients were classified as frail, while 66 (27.2%) were found to be at high malnutrition-risk according to the MUST. Frail patients were more likely to be older with a higher Charlson-index and on polypharmacy than non-frail patients. Patients who were at high malnutrition- risk were more likely to be living alone and on vitamin D supplementation than those at low malnutritionrisk. Patients who were at a high malnutrition-risk but not those who were at moderate malnutrition-risk, were more likely to be deemed frail (aOR 2.6, 95% CI 1.2-5.5, p=0.015) when compared to those who were at low malnutrition-risk.

Conclusions: Only patients who were classified as at high malnutrition-risk according to the MUST are more likely to be deemed frail.