Mini-Nutritional-Assessment (MNA) without body mass index (BMI) predicts functional disability in elderly Taiwanese

Li-Chin Lee, Alan Chung-hong Tsai
Archives of Gerontology and Geriatrics 2012, 54 (3): e405-10
Nutritional status and functional ability are mutually dependent especially in the elderly. This study examined the functional status-predictive ability of the MNA in a cross-sectional study. We analyzed the dataset of the "Survey of Health and Living Status of the Elderly in Taiwan" (SHLSET). Subjects were 2948≥65 year-old persons who were rated with the long-form (LF) and short-form (SF) MNA with or without BMI for the risk of malnutrition, and with the Activities of Daily Living (ADL) and the Instrument Activities of Daily Living (IADL) for functional status. The ADL and IADL scores were calculated according to rated nutritional status. Receiver Operating Characteristic (ROC) curves were generated for ADL and IADL status predicted by the MNA. Logistic regression was performed to evaluate the association of rated MNA scores with ADL or IADL status. Results showed that both SF and LF of MNA-T1 and T2 were able to predict ADL and IADL disabilities. Those who were rated malnourished or at risk of malnutrition had drastically higher risk of ADL or IADL dependency compared to those who were rated normal. The SF versions performed well in rating nutritional status and predicting ADL and IADL status. Overall, MNA-T2-SF performed at least equally well as MNA-T1-SF in rating functional decline. These results suggest the MNA is able to predict functional decline of the elderly. MNA-T2, especially the SF, a version without BMI should be particularly useful in clinical, long-term care and community settings.

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