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评估幼儿饮食的摄入量估计方法

Xiaoshu Zhu¹, Christine Borger¹, Jill DeMatteis²

¹Westat, Bethesda, MD 20814, USA.

|December 31, 2025

概括

国家癌症研究所 (NCI) 的马尔科夫链蒙特卡洛 (MCMC) 方法为分析儿童每日营养摄入量提供了一个可行的替代方案. 然而,对于像全谷物这样偶尔消费的食物,NCI UI方法显示出显著的差异,可能会影响饮食建议.

科学领域:

营养科学营养科学
饮食评估方法饮食评估方法
儿童营养学儿童营养学

背景情况:

准确的饮食评估对于了解儿童的营养状况至关重要.
国家癌症研究所 (NCI) 提供了通常摄入量 (UI) 分析的方法.
对比不同的NCI UI方法对于可靠的饮食摄入量估计至关重要.

研究的目的:

评估国家癌症研究所 (NCI) 马尔科夫链蒙特卡洛 (MCMC) 方法对5岁儿童的通常摄入量 (UI) 分析.
将NCI MCMC方法的结果与其他估计方法 (无变量,一天,两天) 进行比较.

主要方法:

婴幼儿养实践研究-2 (ITFPS-2) 数据的二次分析.
对,添加糖,全谷物,能量和健康饮食指数 (HEI) 的摄入量分布进行比较.
回归分析用于评估摄入量估计方法之间的关联.

主要成果:

每天消耗的营养素在不同方法中显示出极小的差异 (<2%).
插曲性消费的全谷物在NCI UI方法之间的平均摄入量估计中显示出37%的差异.
与MCMC方法相比,单变量方法高估了全谷物平均摄入量.

结论:

在日常营养摄入量分析中,NCI MCMC 方法是一个合适的替代方案.
对于像全谷物这样的偶尔消费的食物,NCI UI方法产生了显著不同的估计.
放弃NCI单变量方法用于插曲性摄入可能会扩大幼儿推和估计的人口摄入水平之间的差距.

关键词:

马尔科夫链蒙特卡洛 (MCMC) 是一个国家癌症研究所 (NCI) 的方法.在WIC ITFPS-2中使用.两种多样性的生物.孩子们的摄入量.没有变异的.通常摄入量 (UI) 估计.

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