微型营养评定法（MNA）而非“决定”筛查工具，是非洲老年人营养状况的有效指标。

The MNA, but not the DETERMINE, screening tool is a valid indicator of nutritional status in elderly Africans.

作者信息

Charlton Karen E, Kolbe-Alexander Tracy L, Nel Johanna H

机构信息

Smart Foods Centre, Faculty of Health and Behavioural Sciences, University of Wollongong, Wollongong, New South Wales, Australia.

出版信息

Nutrition. 2007 Jul-Aug;23(7-8):533-42. doi: 10.1016/j.nut.2007.04.015. Epub 2007 Jun 14.

DOI:10.1016/j.nut.2007.04.015

PMID:17570641

Abstract

OBJECTIVES

We compared the validity of existing nutrition screening tools for use in older South Africans.

METHODS

This was a cross-sectional study in 283 free-living and institutionalized black South Africans > or = 60 y of age. Trained fieldworkers administered a 24-h recall, the DETERMINE and Mini-Nutritional Assessment (MNA) screening tools, and performed anthropometric measurements and physical function tests. Biochemical indicators assessed included serum albumin, hemoglobin, ferritin, vitamin B12, red blood cell folate, cholesterol, and vitamin C. The six-item Cognitive Impairment Test was used to assess cognitive function.

RESULTS

The MNA score was positively and significantly associated with anthropometric measurements, cognitive function, instrumental activities of daily living and, in women only, percentage of body fat, handgrip strength, and activities of daily living. Compared with the MNA, the DETERMINE instrument had a low positive predictive value (55.6%) and specificity (11.2%), resulting in a high rate of false positives classified as being malnourished.

CONCLUSION

The MNA, but not the DETERMINE, screening tool is appropriate for use in identifying older black South Africans who are malnourished or at risk of malnutrition.

摘要

目的

我们比较了现有营养筛查工具在南非老年人群中的有效性。

方法

这是一项针对283名年龄≥60岁的自由生活及机构养老的南非黑人开展的横断面研究。训练有素的现场工作人员采用24小时回顾法、“判定”及微型营养评定（MNA）筛查工具，并进行人体测量和身体功能测试。评估的生化指标包括血清白蛋白、血红蛋白、铁蛋白、维生素B12、红细胞叶酸、胆固醇和维生素C。采用六项认知功能损害测试评估认知功能。