Fialkowski Marie K, McCrory Megan A, Roberts Sparkle M, Tracy J Kathleen, Grattan Lynn M, Boushey Carol J
Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA.
J Am Diet Assoc. 2010 Jan;110(1):65-73. doi: 10.1016/j.jada.2009.10.012.
Accurate assessment of dietary intake is essential for researchers and public health practitioners to make advancements in public health. This is especially important in Native Americans who display disease prevalence rates that are dramatically higher than the general US population.
To evaluate three dietary assessment tools: dietary records, a food frequency questionnaire (FFQ), and a shellfish assessment survey among Native American adults from the Communities Advancing the Studies of Tribal Nations Across the Lifespan (CoASTAL) cohort.
The CoASTAL cohort was composed of randomly selected individuals from three tribal registries of Pacific Northwest Tribal Nations. This cross-sectional study used data from the baseline of CoASTAL and was restricted to the non-pregnant adults (aged 18 years or older) who completed the shellfish assessment survey (n=500), an FFQ (n=518), dietary records (n=444), weight measures (n=493), and height measures (n=496). Paired t tests, Pearson correlation coefficients, and percent agreement were used to evaluate the dietary records and the FFQ with and without accounting for plausibility of reported energy intake (rEI). Sensitivity and specificity as well as Spearman correlation coefficients were used to evaluate the shellfish assessment survey and the FFQ compared to dietary records.
Statistically significant correlations between the FFQ and dietary records for selected nutrients were not the same by sex. Accounting for plausibility of rEI for the dietary records and the FFQ improved the strength of the correlations for percent energy from protein, energy from carbohydrate, and calcium for both men and women. In addition, the association between rEI (dietary records and FFQ) and weight became significant when the sample was limited to plausible rEI. The shellfish assessment survey was found to similarly assess shellfish consumption in comparison to the FFQ.
These results support the benefit of multiple measures of diet, including regional and culturally specific surveys, especially among Native Americans. Accounting for plausibility of rEI may ensure more accurate estimations of dietary intakes.
准确评估饮食摄入量对于研究人员和公共卫生从业者推动公共卫生事业发展至关重要。这在美洲原住民中尤为重要，因为他们的疾病患病率显著高于美国普通人群。
评估三种饮食评估工具：饮食记录、食物频率问卷（FFQ）以及针对来自“促进部落国家全生命周期研究社区”（CoASTAL）队列的美洲原住民成年人的贝类评估调查。
CoASTAL队列由从太平洋西北地区部落国家的三个部落登记处随机选取的个体组成。这项横断面研究使用了CoASTAL基线数据，并仅限于完成贝类评估调查（n = 500）、食物频率问卷（n = 518）、饮食记录（n = 444）、体重测量（n = 493）和身高测量（n = 496）的非怀孕成年人（年龄在18岁及以上）。配对t检验、Pearson相关系数和一致性百分比用于评估饮食记录和食物频率问卷，同时考虑和不考虑报告的能量摄入量（rEI）的合理性。敏感性和特异性以及Spearman相关系数用于评估贝类评估调查和食物频率问卷与饮食记录相比的情况。
按性别划分，选定营养素的食物频率问卷与饮食记录之间的统计学显著相关性并不相同。考虑饮食记录和食物频率问卷中rEI的合理性提高了男性和女性蛋白质能量百分比、碳水化合物能量和钙的相关性强度。此外，当样本仅限于合理的rEI时，rEI（饮食记录和食物频率问卷）与体重之间的关联变得显著。与食物频率问卷相比，发现贝类评估调查同样能评估贝类消费情况。
这些结果支持采用多种饮食测量方法的益处，包括针对特定地区和文化的调查，尤其是在美洲原住民中。考虑rEI的合理性可能确保更准确地估计饮食摄入量。
