Measurement Errors in Dietary Assessment Using Self-Reported 24-Hour Recalls in Low-Income Countries and Strategies for Their Prevention
Measurement Errors in Dietary Assessment Using Self-Reported 24-Hour Recalls in Low-Income Countries and Strategies for Their Prevention
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DOI：
10.3945/an.117.016980
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发表时间：
2017-11-01
影响因子：
9.3
通讯作者：
Bell, Winnie
中科院分区：
文献类型：
--
作者：
Gibson, Rosalind S.;Charrondiere, U. Ruth;Bell, Winnie
确保准确测量不同人群的饮食摄入量是一项挑战。在这些方法中，自我报告的24小时召回通常用于低收入国家（LIC），因为它们快速，文化敏感，不需要高认知能力，并提供有关食物和营养素的定量数据。通过24小时召回测量摄入量涉及1）收集食物摄入量数据，2）适当使用相关食物成分数据计算营养素摄入量，3）将观察到的摄入量统计转换为“通常摄入量”，以评估营养充足性或食物和营养素与健康结果之间的关系。像所有的饮食方法一样，24小时回忆会受到随机误差的影响，这会降低测量协议每个阶段的精度和系统误差。研究已经确定了24小时回忆方案中测量误差的潜在来源，并强调可以通过纳入标准化质量控制程序和收集每人一次以上的24小时回忆来减少随机误差的来源，其数量取决于研究目标。初始24小时回忆方案的仔细设计可以考虑系统误差的潜在来源，例如星期几、季节、年龄等。能量报告不足）可以通过包括参考测量（例如，双标记水以测量能量消耗）。或者，24小时回忆能量摄入量可以与当天称重摄入量进行比较。然而，在低收入国家中，很少有研究在其研究环境中评估24小时召回的有效性，或采用推荐的标准化方案来减少随机错误。因此，应努力改进对低收入国家人口研究中自我报告的24小时回忆数据的评估、分析和解释。在国家一级准确和精确的膳食摄入量数据可以在为食品、营养和农业政策提供信息方面发挥重要作用;食品强化规划;以及遵守基于食物的膳食指南。
Securing accurate measurements of dietary intake across populations is challenging. Of the methods, self-reported 24-h recalls are often used in low-income countries (LICs) because they are quick, culturally sensitive, do not require high cognitive ability, and provide quantitative data on both foods and nutrients. Measuring intakes via 24-h recalls involves 1) collecting data on food intakes, 2) the appropriate use of relevant food-composition data for calculating nutrient intakes, and 3) statistically converting observed intakes to "usual intakes" for evaluating nutrient adequacy or relations between foods and nutrients and health outcomes. Like all dietary methods, 24-h recalls are subject to random errors that lower the precision and systematic errors that can reduce accuracy at each stage of the measurement protocol. Research has identified the potential sources of measurement errors in 24-h recall protocols and emphasized that sources of random error can be reduced by incorporating standardized quality-control procedures and collecting more than one 24-h recall per person, with the number depending on the study objective. Careful design of the initial 24-h recall protocol can take into account potential sources of systematic error, such as day of the week, season, age, etc. Other sources of systematic error (e.g., energy underreporting) can best be detected by including a reference measure (e.g., doubly labeled water to measure energy expenditure). Alternatively, 24-h recall intakes of energy can be compared with same-day weighed intakes. Nevertheless, very few studies in LICs have assessed the validity of 24-h recalls in their study settings or adopted recommended standardized protocols to mitigate random errors. Hence, efforts should be made to improve the assessment, analysis, and interpretation of self-reported 24-h recall data for population studies in LICs. Accurate and precise dietary intake data at the national level can play an essential role in informing food, nutrition, and agricultural policies; food fortification planning; and compliance to food-based dietary guidelines.