Adaptation and evaluation of the National Cancer Institute's Diet History Questionnaire and nutrient database for Canadian populations
Adaptation and evaluation of the National Cancer Institute's Diet History Questionnaire and nutrient database for Canadian populations
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DOI：
10.1017/s1368980007184287
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发表时间：
2007-01-01
影响因子：
3.2
通讯作者：
Subar, Amy F.
中科院分区：
文献类型：
--
作者：
Csizmadi, Ilona;Kahle, Lisa;Subar, Amy F.
背景和目标。尽管假设加拿大和美国的饮食习惯相似，但在食物供应和营养强化方面存在一些差异。因此，为美国设计的食物频率问卷可能无法提供加拿大人群饮食摄入量的最准确估计。因此，我们进行了评估和修改美国国家癌症研究所的饮食史问卷（DHQ）和营养database.Methods：查询的食物DHQ，那些最有可能不同的营养成分进行了鉴定。在可能的情况下，这些食物与加拿大营养档案中的可比食物相匹配。对营养价值进行了检查和修改，以反映加拿大矿物质（钙、铁、锌）和维生素（A、C、D、硫胺素、核黄素、烟酸、B（6）、叶酸和B（12））的含量。对13181名年龄在35-69岁之间的阿尔伯塔队列研究参与者完成的DHQ进行了分析，以使用原始美国和修改版本的DHQ数据库估计营养素摄入量。错误分类的摄入量，以满足膳食参考摄入量（DRI）确定以下分析与美国nutrient database.Results：百分之二十五的2411食物被认为是最有可能不同的营养成分，随后修改叶酸，11%的维生素D，10%的钙和核黄素，和7和10%之间的其余营养素的利益。错误分类方面，以满足DRI的变化，但最高的叶酸（7%）和维生素A（7%）的男性，维生素D（7%）的女性超过50岁的年龄。结论：错误的营养摄入量估计由于美国和加拿大之间的差异，食品强化可以减少在加拿大人口使用营养数据库，反映加拿大的强化做法。
Background and objective. Despite assumed similarities in Canadian and US dietary habits, some differences in food availability and nutrient fortification exist. Food-frequency questionnaires designed for the USA may therefore not provide the most accurate estimates of dietary intake in Canadian populations. Hence, we undertook to evaluate and modify the National Cancer Institute's Diet History Questionnaire (DHQ) and nutrient database.Methods: Of the foods queried on the DHQ, those most likely to differ in nutrient composition were identified. Where possible these foods were matched to comparable foods in the Canadian Nutrient File. Nutrient values were examined and modified to reflect the Canadian content of minerals (calcium, iron, zinc) and vitamins (A, C, D, thiamin, riboflavin, niacin, B(6), folate and B(12)). DHQs completed by 13 181 Alberta Cohort Study participants aged 35-69 years were analysed to estimate nutrient intakes using the original US and modified versions of the DHQ databases. Misclassification of intake for meeting the Dietary Reference intake (DRI) was determined following analysis with the US nutrient database.Results: Twenty-five per cent of 2411 foods deemed most likely to differ in nutrient profile were subsequently modified for folate, 11% for vitamin D, 10% for calcium and riboflavin, and between 7 and 10% for the remaining nutrients of interest. Misclassification with respect to meeting the DRI varied but was highest for folate (7%) and vitamin A (7%) among men, and for vitamin D (7%) among women over 50 years of age.Conclusion: Errors in nutrient intake estimates owing to differences in food fortification between the USA and Canada can be reduced in Canadian populations by using nutrient databases that reflect Canadian fortification practices.