Cade Janet E, Warthon-Medina Marisol, Albar Salwa, Alwan Nisreen A, Ness Andrew, Roe Mark, Wark Petra A, Greathead Katharine, Burley Victoria J, Finglas Paul, Johnson Laura, Page Polly, Roberts Katharine, Steer Toni, Hooson Jozef, Greenwood Darren C, Robinson Sian
Nutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, LS2 9JT, UK.
Department of Food Science and Nutrition, King Abdulaziz University, PO Box 42807, 21551, Jeddah, Saudi Arabia.
BMC Med. 2017 Nov 15;15(1):202. doi: 10.1186/s12916-017-0962-x.
Dietary assessment is complex, and strategies to select the most appropriate dietary assessment tool (DAT) in epidemiological research are needed. The DIETary Assessment Tool NETwork (DIET@NET) aimed to establish expert consensus on Best Practice Guidelines (BPGs) for dietary assessment using self-report.
The BPGs were developed using the Delphi technique. Two Delphi rounds were conducted. A total of 131 experts were invited, and of these 65 accepted, with 48 completing Delphi round I and 51 completing Delphi round II. In all, a total of 57 experts from North America, Europe, Asia and Australia commented on the 47 suggested guidelines.
Forty-three guidelines were generated, grouped into the following four stages: Stage I. Define what is to be measured in terms of dietary intake (what? who? and when?); Stage II. Investigate different types of DATs; Stage III. Evaluate existing tools to select the most appropriate DAT by evaluating published validation studies; Stage IV. Think through the implementation of the chosen DAT and consider sources of potential biases.
The Delphi technique consolidated expert views on best practice in assessing dietary intake. The BPGs provide a valuable guide for health researchers to choose the most appropriate dietary assessment method for their studies. These guidelines will be accessible through the Nutritools website, www.nutritools.org .
膳食评估很复杂，因此需要在流行病学研究中选择最合适的膳食评估工具（DAT）的策略。膳食评估工具网络（DIET@NET）旨在就使用自我报告进行膳食评估的最佳实践指南（BPG）达成专家共识。
采用德尔菲技术制定BPG。进行了两轮德尔菲调查。共邀请了131位专家，其中65位接受邀请，48位完成了第一轮德尔菲调查，51位完成了第二轮德尔菲调查。总共有来自北美、欧洲、亚洲和澳大利亚的57位专家对47条建议指南发表了评论。
共产生了43条指南，分为以下四个阶段：第一阶段。从膳食摄入量方面定义要测量的内容（什么？谁？以及何时？）；第二阶段。研究不同类型的DAT；第三阶段。通过评估已发表的验证研究来评估现有工具，以选择最合适的DAT；第四阶段。全面考虑所选DAT的实施情况，并考虑潜在偏差的来源。
德尔菲技术整合了专家对评估膳食摄入量最佳实践的观点。BPG为健康研究人员为其研究选择最合适的膳食评估方法提供了有价值的指导。这些指南可通过Nutritools网站www.nutritools.org获取。
