Age and Ageing Advance Access published online on February 23, 2004
Age and Ageing, doi:10.1093/ageing/afh078
© 2004 by British Geriatrics Society
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1 Department of Geriatric and Rehabilitation Medicine, Royal Adelaide Hospital, Adelaide, SA, Australia; Department of Medicine, University of Adelaide, Adelaide, SA, Australia
* To whom correspondence should be addressed. E-mail: rvisvanathan{at}ozemail.com.au.
Objectives: to determine the prevalence of under-nutrition using brief screening methods and to determine the relation between these results and (1) those of a more standard nutritional assessment and (2) discharge outcomes. Design: prospective study. Subjects: 65 (21 males) patients older than 65 years. Setting: sub-acute care facility. Measurements: the Mini Nutritional Assessment, standard nutritional assessment, ‘rapid screen’ and discharge outcome. Results: the prevalence of under-nutrition was high, ranging from 35.38% to 43.08%, depending on the screening method used. Compared to the standard nutritional assessment the ‘rapid screen’ consisting of (1) body mass index <22 kg/m2; and/or (2) reported weight loss of >7.5% over the previous 3 months and the two-tiered Mini Nutritional Assessment process (at-risk subjects (46% of total) further evaluated using standard nutritional assessment) had sensitivities of 78.6 and 89.5% and specificities of 97.3 and 87.5% respectively in diagnosing under-nutrition. Under-nourished patients as identified by the standard nutritional assessment (50.00% (under-nourished versus 21.62% (nourished); P = 0.017), the two-tiered Mini Nutritional Assessment process (50.00% (under-nourished) versus 21.62% (nourished); P = 0.017) and the rapid screen (56.52% (under-nourished) versus 21.43% (nourished); P = 0.004) were more likely to be discharged to an acute hospital or an accommodation with increased supports (poor discharge outcomes) than nourished patients. Conclusion: all screening methods identified patients more likely to have a poor discharge outcome. The highly specific but less sensitive ‘rapid screen’ may be the best method in facilities with limited resources as it can be easily incorporated into nursing/medical admissions and avoids biochemical investigations in all patients. The more sensitive two-tiered Mini Nutritional Assessment is better if resources permit. Keywords:
sub-acute care, screening, under-nutrition, elderly, poor outcome
Accepted November 22, 2003
Article
Nutritional screening of older people in a sub-acute care facility in Australia and its relation to discharge outcomes
2 Department of Geriatric and Rehabilitation Medicine, Royal Adelaide Hospital, Adelaide, SA, Australia
3 Department of Medicine, University of Adelaide, Adelaide, SA, Australia
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