A UK on-line 24h dietary recall tool for population studies: development, validation and practical application

由于缺乏收集饮食信息的准确工具，旨在发现我们的饮食是否会影响我们的健康的研究受到阻碍。这种测量工具需要在合理的时间框架内收集和分析数据，有足够的细节，对不同年龄和种族群体有足够的灵活性，并以最低的成本。目前在英国还没有这样的饮食评估工具。本研究将利用互联网开发一种新的以英国为重点的饮食评估工具，该工具基于美国开发的自动多次通过方法（AMPM）。AMPM通过5轮询问来获得过去24小时内所吃食物的详细记录。一个搜索引擎允许参与者从一个庞大的食物数据库中的几千种食物中进行选择。这个项目有三个主要组成部分。1)开发一个新的英国在线饮食评估工具。美国和法国现有的在线工具（ASA24、DietDay、Nutrinet Sante）将通过焦点小组进行比较。30名潜在用户将根据年龄分为3组：青少年；成年人;老年人退休后。在此之后，新的英国工具将以美国ASA24工具为模板开发。2)研究的第二部分是验证研究，看看新工具与现有工具相比如何？黄金标准?方法。我们将通过在线工具评估的食物和营养素摄入量与通过采访者管理的饮食回忆（AMPM）获得的食物和营养素进行比较，并与营养素的独立生物标志物进行比较：特别是尿N（蛋白质）；钾;蔗糖和果糖；总能量消耗。200名参与者将在6个月内进行重复测量。我们将通过在线召回和AMPM测量的平均值来评估生物标志物和营养摄入量之间的一致性差异。最后一部分将是一项试点研究，以观察新工具在两个不同的流行病学队列中实际工作的效果。一个由200名英国老年妇女组成的小组？s队列及其成年子女和青少年孙辈以及来自帝国临床生物银行的100名参与者将在6个月内完成3次在线回忆。帝国临床生物银行是一个基于临床的队列，具有混合人群特征。该工具的传播是关键，开放获取至关重要。我们打算向其他英国研究人员免费提供该软件。

Research that aims to discover whether what we eat affects our health has been hampered by lack of accurate tools to collect information on diet. Such a measurement tool would need to collect and analyse data in a reasonable time frame, with enough detail, flexible enough for different ages and ethnic groups and at minimal cost. At the moment there is no such dietary assessment tool available in the UK. This study will make use of the internet to develop a new UK focussed dietary assessment tool based on the Automated Multiple Pass Method (AMPM) developed in the USA. The AMPM uses 5 cycles of questioning to obtain a detailed account of food eaten in the past 24 hours. A search engine allows participants to select from several thousand food items in an extensive food database. This project has three main components. 1) Development of a new UK on-line dietary assessment tool. Existing online tools from the US and France (ASA24, DietDay, Nutrinet Sante) will be compared using focus groups. 30 potential users will be divided into 3 groups according to age: adolescent; adult; elderly (post-retirement). Following this the new UK tool will be developed based on the American ASA24 tool as template. 2) The second part of the study is a validation study, to see how the new tool compares to existing ?gold standard? approaches. We will compare food and nutrient intakes assessed by the on-line tool with foods and nutrients obtained using an interviewer administered dietary recall (the AMPM) both in comparison to independent biomarkers of nutrients: specifically urinary N (for protein); potassium; sucrose and fructose; and total energy expenditure. 200 participants will provide repeated measurements over 6 months. We will look at differences in agreement between the biomarkers and nutrient intakes as assessed by the average of measurements from both the on-line recall and the AMPM. 3) The final part will be a pilot study to see how well the new tool will work in practise with two different epidemiological cohorts. A subgroup of 200 older women in the UK Women?s Cohort plus their adult children and adolescent grandchildren and 100 participants from the Clinical Biobank at Imperial, a clinic based cohort with mixed population characteristics, will complete 3 on-line recalls over 6 months.Dissemination of the tool is key and open access vital. We intend to provide the software free of charge to other UK researchers.