一种用于评估伊朗成年人能量和营养素摄入量的基于菜肴的半定量食物频率问卷的有效性和可靠性。
Validity and reliability of a dish-based semi-quantitative food frequency questionnaire for assessment of energy and nutrient intake among Iranian adults.
作者信息
Doustmohammadian Azam, Amini Maryam, Esmaillzadeh Ahmad, Omidvar Nasrin, Abtahi Mitra, Dadkhah-Piraghaj Monireh, Nikooyeh Bahareh, Neyestani Tirang R
机构信息
Department of Nutrition Research, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, No. 7., Hafezi St., Farahzadi Blvd., P.O.Box: 19395-4741, Tehran, 1981619573, Iran.
Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.
出版信息
BMC Res Notes. 2020 Feb 24;13(1):95. doi: 10.1186/s13104-020-04944-3.
OBJECTIVE
This study aimed to assess the validity and reliability of a dish-based, semi-quantitative food frequency questionnaire (DFFQ) for epidemiological studies in Iran. The DFFQ included 142 items (84 foods and 58 mixed dishes) which was filled in by 230 adults (110 men). All participants completed two separate DFFQs with a 6 months interval as well as six 24-h recalls, each month. Dietary biomarkers and anthropometric measurements were made. The validity was evaluated by comparing the DFFQ against 24-h dietary recalls and dietary biomarkers, including serum retinol and beta-carotene. Reliability was evaluated using intra-class correlation coefficient (ICC) and validity was determined by unadjusted and energy adjusted correlation coefficients (CC), de-attenuated CC, and cross-classification analyses.
RESULTS
ICC for reliability ranged between 0.42 and 0.76. De-attenuated CC for the FFQ and the 24-h recalls ranged between 0.13 and 0.54 (Mean = 0.38). The de-attenuated CC between the DFFQ and plasma levels of retinol and beta-carotene were 0.58 (P = 0.0001) and 0.40 (P = 0.0001), respectively. Cross-classification analysis revealed that on average 73% were correctly classified into same or adjacent quartiles and 5% were classified in opposite quartiles.
目的
本研究旨在评估一种用于伊朗流行病学研究的基于菜肴的半定量食物频率问卷（DFFQ）的有效性和可靠性。该DFFQ包含142个项目（84种食物和58种混合菜肴），由230名成年人（110名男性）填写。所有参与者在6个月的间隔内分别完成两份DFFQ以及每月一次的六次24小时膳食回顾。同时进行膳食生物标志物检测和人体测量。通过将DFFQ与24小时膳食回顾以及膳食生物标志物（包括血清视黄醇和β-胡萝卜素）进行比较来评估有效性。使用组内相关系数（ICC）评估可靠性，并通过未调整和能量调整的相关系数（CC）、去衰减CC以及交叉分类分析来确定有效性。
结果
可靠性的ICC范围在0.42至0.76之间。FFQ与24小时膳食回顾的去衰减CC范围在0.13至0.54之间（平均值 = 0.38）。DFFQ与视黄醇和β-胡萝卜素血浆水平之间的去衰减CC分别为0.58（P = 0.0001）和0.40（P = 0.0001）。交叉分类分析显示，平均73%被正确分类到相同或相邻四分位数，5%被分类到相反四分位数。
Zotero 插件