Standardization of the 24-hour diet recall calibration method used in the European Prospective Investigation into Cancer and Nutrition (EPIC):: general concepts and preliminary results
Standardization of the 24-hour diet recall calibration method used in the European Prospective Investigation into Cancer and Nutrition (EPIC):: general concepts and preliminary results
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DOI：
10.1038/sj.ejcn.1601107
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发表时间：
2000-12-01
影响因子：
4.7
通讯作者：
Riboli, E
中科院分区：
文献类型：
--
作者：
Slimani, N;Ferrari, P;Riboli, E
目的：尽管人们对膳食调查中的校准概念越来越感兴趣，但在使用和标准化共同参考膳食方法方面，特别是在国际研究中，仍然缺乏经验。在本文中，我们提出了一般的理论框架和方法，以标准化的计算机辅助24小时饮食回忆法（EPIC-SOFT），用于收集约37000 24小时饮食回忆测量（24-HDR）从10个国家参加欧洲癌症和营养前瞻性调查（EPIC）。此外，还进行了方差分析，以检查参与研究的90名访谈者的EPIC-SOFT标准化水平。方法：方差分析使用随机效应模型，其中以每位采访者的平均能量摄入量为因变量，而年龄、体重指数（BMI）、能量需求、工作日、季节、特殊饮食、特殊日子，体力活动和EPIC-SOFT版本被用作自变量。分别进行男性和women.Results的分析：结果显示，在所有国家的男性和五个八个国家的女性，调整后的身体活动和EPIC-SOFT程序版本，并排除在德国（男性），一个在丹麦（女性）的采访者之间没有统计学差异。这些结果表明，在某些国家存在访谈者效应，在性别之间存在显著差异，这表明，由于EPIC中一贯观察到的妇女报告不足的情况较多，因此存在潜在的应答者效应。然而，受访者和国家平均能量摄入量之间的实际差异约为10%。此外，除了意大利和德国的男性以及法国和西班牙的女性外，在同一国家的各中心之间没有观察到平均能量摄入量的统计差异，这些国家的人口是从分散在各国的地区招募的。尽管取得了这些令人鼓舞的结果，并努力使24-HDR访谈方法标准化，受访者的有意识或无意识行为和/或访谈者的偏见无法完全避免。将通过对独立生物标志物（氮、钾）进行验证，进一步评价EPIC-SOFT测量的可靠性。
Objectives: Despite increasing interest in the concept of calibration in dietary surveys, there is still little experience in the use and standardization of a common reference dietary method, especially in international studies. In this paper, we present the general theoretical framework and the approaches developed to standardize the computer-assisted 24 h diet recall method (EPIC-SOFT) used to collect about 37 000 24-h dietary recall measurements (24-HDR) from the 10 countries participating in the European Prospective Investigation into Cancer and Nutrition (EPIC). In addition, an analysis of variance was performed to examine the level of standardization of EPIC-SOFT across the 90 interviewers involved in the study.Methods: The analysis of variance used a random effects model in which mean energy intake per interviewer was used as the dependent variable, while age, body mass index (BMI), energy requirement, week day,season, special diet, special day, physical activity and the EPIC-SOFT version were used as independent variables. The analysis was performed separately for men and women.Results: The results show no statistical difference between interviewers in all countries for men and five out of eight countries for women, after adjustment for physical activity and the EPIC-SOFT program version used, and the exclusion of one interviewer in Germany (for men), and one in Denmark (for women). These results showed an interviewer effect in certain countries and a significant difference between gender, suggesting an underlying respondent's effect due to the higher under-reporting among women that was consistently observed in EPIC. However, the actual difference between interviewer and country mean energy intakes is about 10%. Furthermore, no statistical differences in mean energy intakes were observed across centres from the same country, except in Italy and Germany for men, and France and Spain for women, where the populations were recruited from areas scattered throughout the countries.Conclusion: Despite these encouraging results and the efforts to standardize the 24-HDR interview method, conscious or unconscious behaviour of respondents and/or interviewer bias cannot be prevented entirely. Further evaluation of the reliability of EPIC-SOFT measurements will be conducted through validation against independent biological markers (nitrogen, potassium).