Machado Renata Santos Pereira, Coelho Maria Auxiliadora Santa Cruz, Veras Renato Peixoto
Instituto de Nutrição Josué de Castro - INJC, Universidade Federal do Rio de Janeiro - UFRJ, Av. Carlos Chagas Filho, 373 - Ed. do Centro de Ciências da Saúde, Bloco J / 2° andar. Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brasil.
Universidade Aberta da Terceira Idade - UnATI, Universidade Estadual do Rio de Janeiro - UERJ, Rio de Janeiro, Brasil.
BMC Geriatr. 2015 Oct 22;15:132. doi: 10.1186/s12877-015-0129-6.
Malnutrition is common and affects negatively the health of the older adult. The Mini Nutritional Assessment (MNA), a nutritional assessment tool allows to identify elders malnourished and at risk of malnutrition. The aim of this study is to validate the Portuguese version of the MNA.
Cross-sectional study with 344 Brazilian elderly. The full version of the MNA was performed, also calf circumference (CC), mid arm circumference (MAC) and body fat (BF). Psychometric evaluation was carried out and correlation, diagnostic accuracy and ROC curves were generated.
Construct validity was supported, all four questionnaire dimensions were evidenced in the Principal Component Analysis and also significant Spearman correlation (P < 0.001) were demonstrated. Criterion validity was also evidenced with relevant sensitivity (MAC = 82.8; CI95% = 64.2-94.2) and specificity (CC = 80.0; CI95% = 74.0-85.1). In the ROC curve AUC was excellent (MAC = 0.832; CI95% =0.785-0.873).
The full MNA demonstrated significant results and sufficient exploratory psychometric properties that supported its validity. It seems to be valid tool to access nutritional status of Brazilian elderly.
营养不良在老年人中很常见，且对老年人的健康有负面影响。微型营养评定法（MNA）是一种营养评估工具，可用于识别营养不良及有营养不良风险的老年人。本研究的目的是验证MNA的葡萄牙语版本。
对344名巴西老年人进行横断面研究。采用MNA完整版进行评估，同时测量小腿围（CC）、上臂围（MAC）和体脂（BF）。进行心理测量学评估，并生成相关性、诊断准确性和ROC曲线。
支持结构效度，主成分分析证明了问卷的所有四个维度，且显示出显著的Spearman相关性（P < 0.001）。标准效度也得到证实，具有相关的敏感性（MAC = 82.8；95%置信区间=64.2-94.2）和特异性（CC = 80.0；95%置信区间=74.0-85.1）。在ROC曲线中，AUC极佳（MAC = 0.832；95%置信区间=0.785-0.873）。
MNA完整版显示出显著结果和足够的探索性心理测量学特性，支持其有效性。它似乎是评估巴西老年人营养状况的有效工具。
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