[巴西老年人健康与生活方式研究（ELSA-Brasil）中使用的食物频率问卷的可重复性和相对效度]

[Reproducibility and relative validity of the Food Frequency Questionnaire used in the ELSA-Brasil].

作者信息

Molina Maria Del Carmen Bisi, Benseñor Isabela M, Cardoso Letícia de Oliveira, Velasquez-Melendez Gustavo, Drehmer Michele, Pereira Taísa Sabrina Silva, Faria Carolina Perim de, Melere Cristiane, Manato Lívia, Gomes Andrea Lizabeth Costa, Fonseca Maria de Jesus Mendes da, Sichieri Rosely

机构信息

Universidade Federal do Espírito Santo, Vitória, Brasil.

出版信息

Cad Saude Publica. 2013 Feb;29(2):379-89.

PMID:23459823

Abstract

This study evaluated the reproducibility and relative validity of the Food Frequency Questionnaire (FFQ) used in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Participants (n = 281) completed the FFQ and three food records on two occasions during a 12-month period. Energy and nutrient values from food records were disattenuated and log-transformed. Reproducibility and validity were assessed by the intra-class correlation coefficient (ICC). Agreement between the two methods was evaluated by classification in tertiles. In the evaluation of reproducibility, ICC estimated ranged from 0.55 to 0.83 for protein and vitamin E, respectively. On relative validity, ICC ranged from 0.20 to 0.72 for selenium and calcium, respectively. Exact and adjacent agreement between methods varied from 82.9% for vitamin E to 89% for lipids and calcium (mean 86%). Average disagreement was 13.6%. In conclusion, this FFQ showed satisfactory reliability for all nutrients and reasonable validity, especially for energy, macronutrients, calcium, potassium, and vitamins E and C.

摘要

本研究评估了巴西成人健康纵向研究（ELSA - Brasil）中使用的食物频率问卷（FFQ）的可重复性和相对有效性。参与者（n = 281）在12个月期间分两次完成了FFQ和三份食物记录。对食物记录中的能量和营养成分值进行了去衰减和对数转换。通过组内相关系数（ICC）评估可重复性和有效性。通过三分位数分类评估两种方法之间的一致性。在可重复性评估中，蛋白质和维生素E的ICC估计值分别为0.55至0.83。在相对有效性方面，硒和钙的ICC分别为0.20至0.72。方法之间的精确和相邻一致性从维生素E的82.9%到脂质和钙的89%不等（平均86%）。平均不一致率为13.6%。总之，该FFQ对所有营养素显示出令人满意的可靠性和合理的有效性，特别是对于能量、宏量营养素、钙、钾以及维生素E和C。