Kennedy Gina L, Pedro Maria Regina, Seghieri Chiara, Nantel Guy, Brouwer Inge
Nutrition and Consumer Protection Division, Food and Agriculture Organization, Rome, Italy 00153.
J Nutr. 2007 Feb;137(2):472-7. doi: 10.1093/jn/137.2.472.
Micronutrient malnutrition remains a problem of public health concern in most developing countries, partly due to monotonous, cereal-based diets that lack diversity. The study objective was to assess whether dietary diversity score (DDS) based on a simple count of food groups consumed and DDS using a 10-g minimum intake for each food group (DDS 10g) are good indicators of adequate micronutrient intake in 24-71-mo-old non-breast-feeding Filipino children. Pearson's correlation and linear regression were used to assess the utility of DDS and DDS 10g as indicators of micronutrient intake. Sensitivity and specificity analysis were used to determine the most appropriate cut-off point for using DDS to categorize children with high probability of adequate micronutrient intake. The average diet of the sample population consisted of 4-5 food groups. The mean probability of adequate nutrient intake (MPA) of 11 micronutrients was 33%. The Pearson's correlation coefficient between MPA and DDS was 0.36 (P<0.001) and for DDS 10g it increased to 0.44 (P<0.001). Intake of individual micronutrients was correlated to DDS for most nutrients. When maximizing sensitivity and specificity, the best cut-off points for achieving 50 and 75% probability of adequate micronutrient intake were 5 and 6 food groups, respectively. DDS and DDS 10g were both significant predictors of adequate micronutrient intake. This study demonstrates the utility of indicators of dietary diversity to predict adequate intake of micronutrients in the diets of young non-breast-feeding children.
在大多数发展中国家，微量营养素营养不良仍然是一个备受公共卫生关注的问题，部分原因是饮食单一，以谷类为主，缺乏多样性。本研究的目的是评估基于所摄入食物种类简单计数的饮食多样性评分（DDS）以及对每种食物组采用10克最低摄入量的饮食多样性评分（DDS 10g）是否是24至71个月大非母乳喂养菲律宾儿童微量营养素摄入充足的良好指标。采用Pearson相关性分析和线性回归来评估DDS和DDS 10g作为微量营养素摄入指标的效用。采用敏感性和特异性分析来确定使用DDS对微量营养素摄入充足可能性高的儿童进行分类的最合适切点。样本人群的平均饮食包含4至5种食物组。11种微量营养素摄入充足的平均概率（MPA）为33%。MPA与DDS之间的Pearson相关系数为0.36（P<0.001），与DDS 10g的相关系数则增至0.44（P<0.001）。大多数营养素的个体微量营养素摄入量与DDS相关。在最大化敏感性和特异性时，实现微量营养素摄入充足概率为50%和75%的最佳切点分别为5种和6种食物组。DDS和DDS 10g均为微量营养素摄入充足的显著预测指标。本研究证明了饮食多样性指标在预测非母乳喂养幼儿饮食中微量营养素摄入充足方面的效用。
