Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias S/N, Juriquilla, Querétaro 76320, Mexico.
Instituto Nacional de Salud Pública, Av. Universidad 655, Santa María Ahuacatitlán, Cuernavaca 62100, Mexico.
Int J Environ Res Public Health. 2022 Oct 12;19(20):13097. doi: 10.3390/ijerph192013097.
Instruments for estimating the intake of food components can be useful in the prevention and/or treatment of diseases related to improper diet. There is, at present, no scientifically validated instrument for estimating consumption of trans fatty acids (TFA) in the Mexican population. The objective of this study was to design and validate such an instrument: a questionnaire that can be used to estimate consumption of TFA from food products. The questionnaire was applied to 162 students from the Autonomous University of Querétaro (UAQ). There were two phases to the study: (1) design of a food frequency questionnaire to assess consumption of trans fatty acids (FFQ-TFA) and an eating practices questionnaire (EPQ-TFA); (2) validation of the instrument. Content validity was measured by expert review and by Aiken's V method, obtaining an overall score of 0.895. As final tests for the FFQ-TFA analysis, criterion validity was measured using Spearman's correlation (r = 0.717, < 0.01) and a linear regression (B = 0.668), considering the results of the 24-h dietary recall (24 HR); and reproducibility or temporal stability was measured using Pearson's correlation (r = 0.406, < 0.01). Subsequently, a Pearson correlation was applied between TFA consumption estimated by the FFQ-TFA-2 and the global score from the EPQ-TFA-2 (r = 0.351, < 0.01). A Pearson correlation was applied between the EPQ-TFA-1 and the EPQ-TFA-2 (r = 0.575, < 0.01). TFA consumption per day was 2.49 ± 1.32 g in the participating population, which was 1.04 ± 0.51% of their total kcal consumption.
用于估计食物成分摄入量的工具可用于预防和/或治疗与饮食不当相关的疾病。目前，尚无经过科学验证的工具可用于估计墨西哥人口中反式脂肪酸（TFA）的摄入量。本研究的目的是设计和验证一种工具：一种可用于估计来自食品中 TFA 摄入量的问卷。该问卷应用于来自 Autonomous University of Querétaro（UAQ）的 162 名学生。该研究分为两个阶段：（1）设计一种用于评估反式脂肪酸摄入量的食物频率问卷（FFQ-TFA）和饮食实践问卷（EPQ-TFA）；（2）验证工具。内容有效性通过专家审查和 Aiken 的 V 方法进行测量，获得了 0.895 的总体得分。作为对 FFQ-TFA 分析的最终测试，使用 Spearman 相关性（r = 0.717，<0.01）和线性回归（B = 0.668）来衡量标准有效性，考虑到 24 小时膳食回顾（24 HR）的结果；使用 Pearson 相关性（r = 0.406，<0.01）来衡量重现性或时间稳定性。随后，应用 Pearson 相关性分析 FFQ-TFA-2 估计的 TFA 摄入量与 EPQ-TFA-2 的总得分之间的相关性（r = 0.351，<0.01）。还应用 Pearson 相关性分析了 EPQ-TFA-1 和 EPQ-TFA-2 之间的相关性（r = 0.575，<0.01）。参与人群每天 TFA 摄入量为 2.49 ± 1.32 g，占其总卡路里摄入量的 1.04 ± 0.51%。
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