Mazandaran University of Medical Sciences, Sari, Islamic Republic of Iran.
Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.
Sci Rep. 2023 Aug 20;13(1):13553. doi: 10.1038/s41598-023-39885-x.
The objectives of this study were to translate and validate the Persian version of the food involvement inventory (FII) and eating restriction questionnaire (ERQ) and to determine the measurement invariance based on gender, body mass index (BMI) status, and age. This cross-sectional study included 1100 Iranian adults. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used to evaluate the construct validity of FII and ERQ. Convergent and discriminant validity, measurement invariance in gender, BMI and age, reliability including internal consistency, and stability were investigated for FII and ERQ. The results showed that the four-factor construct of the FII and the one-factor construct of the ERQ were 44.27% and 55.12% of the total variance, respectively. The factor loadings of all items were > .3 in both scales and none of the items were deleted. Fitting indices indicated that the four-factor construct of the FII and the one-factor construct of the ERQ had a good and acceptable fit among the Iranian adults. The Persian versions of the FII and ERQ, translated into Persian and localized according to international standards, had high construct, convergent and discriminant validity as well as high reliability.
本研究旨在翻译并验证食物投入量表（FII）和饮食限制问卷（ERQ）的波斯语版本，并基于性别、体重指数（BMI）状况和年龄确定测量不变性。本横断面研究纳入了 1100 名伊朗成年人。采用探索性因子分析（EFA）和验证性因子分析（CFA）评估 FII 和 ERQ 的结构效度。FII 和 ERQ 的收敛和判别效度、性别、BMI 和年龄的测量不变性、内部一致性等可靠性以及稳定性进行了研究。结果表明，FII 的四因素结构和 ERQ 的单因素结构分别占总方差的 44.27%和 55.12%。两个量表中所有项目的因子负荷均>0.3，且没有删除任何项目。拟合指数表明，FII 的四因素结构和 ERQ 的单因素结构在伊朗成年人中具有良好和可接受的拟合度。翻译为波斯语并根据国际标准进行本地化的 FII 和 ERQ 波斯语版本具有较高的结构、收敛和判别效度以及较高的可靠性。
