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估计孕期饮食评估所需的日期:一个建模研究

James D Pleuss¹, Andrea L Deierlein², Samantha Kleinberg³

¹Department of Computer Science, Stevens Institute of Technology, Hoboken, NJ, United States; Department of Mathematical Sciences, United States Military Academy, West Point, NY, United States.

The American journal of clinical nutrition

|November 23, 2025

概括

确定怀孕期间最佳的饮食评估日数对于准确的健康研究至关重要. 这项研究开发了一种新方法,发现当前的研究可能低估了准确估计个人饮食摄入量所需的天数.

科学领域:

营养科学营养科学
孕产妇健康孕产妇健康
生物统计学生物统计学

背景情况:

饮食评估对于理解饮食与健康之间的关系至关重要.
准确的饮食数据收集需要平衡摄入量的变化与参与者的负担.
很少有方法可以确定最佳的饮食数据收集时间,特别是在怀孕期间.

研究的目的:

通过算法确定必要的饮食数据收集日数,以准确估计孕妇的关键营养特征.
评估能量,宏观营养素,宏观营养素密度,饮食质量 (HEI 2020) 和摄入时间.

主要方法:

分析了147名孕妇 (每位≤28天) 的饮食记录.
应用混合效应模型来估计摄入相关性 (≥0.90) 和准确性 (20%以内) 所需的天数.
引导用于为实际后果创建概率框架.

主要成果:

在所有饮食特征上,个人内部的变化超过了个人之间的变化.
大量营养素需要最多的天 (例如,脂肪需要17天),而饮食质量和摄入时间需要更少的时间 (2-6天).
基于队列的估计低估了个人的准确性需求,只有56%的人符合HEI要求.

结论:

介绍了一种用于估计所需饮食评估日的新方法,有助于未来研究设计.
由于数据收集时间不足,现有研究可能不足.
群体级准确度估计可能会夸大个体级准确度.

关键词:

时间营养饮食回忆饮食评估饮食评估饮食变化饮食变化动力分析分析能力分析怀孕怀孕怀孕怀孕怀孕分析一天的类型.

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