Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns.

IF 4.4 2区医学 Q1 NUTRITION & DIETETICS

Nutrition Journal Pub Date : 2024-03-13 DOI:10.1186/s12937-024-00938-0

Sareh Eghtesad, Sahar Masoudi, Maryam Sharafkhah, Bahram Rashidkhani, Ali Esmaeili-Nadimi, Farid Najafi, Elnaz Faramarzi, Reza Homayounfar, Pedram Ebrahimnejad, Alireza Ansari-Moghaddam, Mohammadreza Mirjalili, Hossein Poustchi, Walter C Willett, Reza Malekzadeh, Azita Hekmatdoost

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引用次数: 0

Abstract

Background: Dietary patterns, encompassing an overall view of individuals' dietary intake, are suggested as a suitable means of assessing nutrition's role in chronic disease development. The aim of this study was to evaluate the validity and reproducibility of a food frequency questionnaire (FFQ) designed for use in the Prospective Epidemiological Research Studies in IrAN (PERSIAN), by comparing major dietary patterns assessed by the FFQ with a reference method.

Methods: Study participants included men and women who enrolled in the PERSIAN Cohort Study at seven of the eighteen centers. These centers were chosen to include dietary variations observed among the different Iranian ethnic populations. Two FFQ were completed for each participant over a one-year study period (FFQ1 upon enrollment and FFQ2 at the end of the study), with 24 interviewer-administered 24-hour dietary recalls (24 h) being completed monthly in between. Spearman correlation coefficients (SCC) were used comparing FFQs 1 and 2 to the 24 h to assess validity, while FFQ1 was compared to FFQ2 to assess reproducibility of the questionnaire.

Results: Three major dietary patterns-Healthy, Low Protein/High Carb and Unhealthy-were identified, accounting for 70% of variance in the study population. Corrected SCC ranged from 0.31 to 0.61 in the validity and from 0.34 to 0.57 in reproducibility analyses, with the first two patterns, which accounted for over 50% of population variance, correlated at above 0.5 in both parameters, showing acceptable findings.

Conclusions: The PERSIAN Cohort FFQ is suitable for identification of major dietary patterns in the populations it is used for, in order to assess diet-disease relationships.

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PERSIAN 群体食物频率问卷的有效性和可重复性：主要饮食模式评估。

背景：膳食模式包括个人膳食摄入的总体情况，被认为是评估营养在慢性疾病发展中的作用的一种合适方法。本研究的目的是通过比较食物频率问卷与参考方法评估的主要饮食模式，评估食物频率问卷（FFQ）的有效性和可重复性，该问卷设计用于伊朗前瞻性流行病学研究（PERSIAN）：研究对象包括在 18 个中心中的 7 个中心参加 PERSIAN 队列研究的男性和女性。选择这些中心的目的是观察不同伊朗种族人口之间的饮食差异。在为期一年的研究期间，每位参与者都填写了两份 FFQ（入学时填写 FFQ1，研究结束时填写 FFQ2），其间每月填写 24 次由访谈者主持的 24 小时膳食回顾（24 h）。斯皮尔曼相关系数（SCC）用于比较 FFQ1 和 2 与 24 小时的相关性，以评估有效性，而 FFQ1 与 FFQ2 的相关性则用于评估问卷的再现性：结果：确定了三种主要饮食模式--健康、低蛋白/高碳水化合物和不健康，占研究人群差异的 70%。在效度分析中，校正 SCC 从 0.31 到 0.61 不等，在重现性分析中，校正 SCC 从 0.34 到 0.57 不等，前两种膳食模式占人群变异的 50%以上，这两种膳食模式在两个参数中的相关性都在 0.5 以上，结果可以接受：结论：PERSIAN 队列 FFQ 适合用于识别人群的主要膳食模式，以评估膳食与疾病的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nutrition Journal NUTRITION & DIETETICS-

CiteScore

9.80

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Nutrition Journal publishes surveillance, epidemiologic, and intervention research that sheds light on i) influences (e.g., familial, environmental) on eating patterns; ii) associations between eating patterns and health, and iii) strategies to improve eating patterns among populations. The journal also welcomes manuscripts reporting on the psychometric properties (e.g., validity, reliability) and feasibility of methods (e.g., for assessing dietary intake) for human nutrition research. In addition, study protocols for controlled trials and cohort studies, with an emphasis on methods for assessing dietary exposures and outcomes as well as intervention components, will be considered. Manuscripts that consider eating patterns holistically, as opposed to solely reductionist approaches that focus on specific dietary components in isolation, are encouraged. Also encouraged are papers that take a holistic or systems perspective in attempting to understand possible compensatory and differential effects of nutrition interventions. The journal does not consider animal studies. In addition to the influence of eating patterns for human health, we also invite research providing insights into the environmental sustainability of dietary practices. Again, a holistic perspective is encouraged, for example, through the consideration of how eating patterns might maximize both human and planetary health.