J Acad Nutr Diet. 2019 Nov;119(11):1801-1816. doi: 10.1016/j.jand.2019.06.010. Epub 2019 Sep 11.
Careful consideration of the validity and reliability of methods intended to assess dietary intake is central to the robustness of nutrition research. A dietary assessment method with high validity is capable of providing useful measurement for a given purpose and context. More specifically, a method with high validity is well grounded in theory; its performance is consistent with that theory; and it is precise, dependable, and accurate within specified performance standards. Assessing the extent to which dietary assessment methods possess these characteristics can be difficult due to the complexity of dietary intake, as well as difficulties capturing true intake. We identified challenges and best practices related to the validation of self-report dietary assessment methods. The term validation is used to encompass various dimensions that must be assessed and considered to determine whether a given method is suitable for a specific purpose. Evidence on the varied concepts of validity and reliability should be interpreted in combination to inform judgments about the suitability of a method for a specified purpose. Self-report methods are the focus because they are used in most studies seeking to measure dietary intake. Biomarkers are important reference measures to validate self-report methods and are also discussed. A checklist is proposed to contribute to strengthening the literature on the validation of dietary assessment methods and ultimately, the nutrition literature more broadly.
认真考虑旨在评估饮食摄入的方法的有效性和可靠性是营养研究稳健性的核心。具有高有效性的饮食评估方法能够为特定目的和背景提供有用的测量。更具体地说，具有高有效性的方法在理论上有充分依据；其性能与该理论一致；并且在规定的性能标准内具有精确性、可靠性和准确性。由于饮食摄入的复杂性以及难以捕捉真实摄入量，评估饮食评估方法在多大程度上具有这些特征可能具有挑战性。我们确定了与自我报告饮食评估方法验证相关的挑战和最佳实践。验证一词用于涵盖必须评估和考虑的各个维度，以确定给定方法是否适合特定目的。关于有效性和可靠性的各种概念的证据应结合起来解释，以告知关于方法是否适合特定目的的判断。由于自我报告方法常用于大多数试图测量饮食摄入的研究，因此它们是重点。生物标志物是验证自我报告方法的重要参考指标，也进行了讨论。提出了一份清单，以有助于加强关于饮食评估方法验证的文献，最终更广泛地加强营养文献。
