Manzoni Gian Mauro, Rossi Alessandro, Pietrabissa Giada, Mannarini Stefania, Fabbricatore Mariantonietta, Imperatori Claudio, Innamorati Marco, Gearhardt Ashley N, Castelnuovo Gianluca
Psychology Research Laboratory, Ospedale San Giuseppe, IRCCS, Istituto Auxologico Italiano, Verbania, Italy.
Faculty of Psychology, eCampus University, Novedrate, Como, Italy.
Eat Weight Disord. 2021 Feb;26(1):345-366. doi: 10.1007/s40519-020-00858-y. Epub 2020 Feb 6.
To examine the structural validity, measurement invariance, reliability, and some other psychometrical properties of the Italian version of the Yale Food Addiction Scale 2 (I-YFAS 2.0) in patients with severe obesity and the general population.
704 participants-400 inpatients with severe obesity and 304 participants enrolled from the general population-completed the I-YFAS 2.0 and questionnaires measuring eating disorder symptoms. A first confirmatory factor analysis (CFA) tested a hierarchical structure in which each item of the I-YFAS 2.0 loaded onto one of the twelve latent symptoms/criteria which loaded onto a general dimension of Food Addiction (FA). The second CFA tested a first-order structure in which symptoms/criteria of FA simply loaded onto a latent dimension. Measurement invariance (MI) between the group of inpatients with severe obesity and the sample from the general population was also tested. Finally, convergent validity, test-retest reliability, internal consistency, and prevalence analyses were performed.
CFAs confirmed the structure for the I-YFAS 2.0 for both the hierarchical structure and the first-order structure. Configural MI and strong MI were reached for hierarchical and the first-order structure, respectively. Internal consistencies were shown to be acceptable. Prevalence of FA was 24% in the group of inpatients with severe obesity and 3.6% in the sample from the general population.
The I-YFAS 2.0 represents a valid and reliable questionnaire for the assessment of FA in both Italian adult inpatients with severe obesity and the general population, and is a psychometrically sound tool for clinical as well as research purposes.
Level V, descriptive study.
检验意大利版耶鲁食物成瘾量表2（I-YFAS 2.0）在重度肥胖患者和普通人群中的结构效度、测量不变性、信度及其他一些心理测量学特性。
704名参与者——400名重度肥胖住院患者和304名来自普通人群的参与者——完成了I-YFAS 2.0及测量饮食失调症状的问卷。首次验证性因素分析（CFA）测试了一种层次结构，其中I-YFAS 2.0的每个项目都加载到十二个潜在症状/标准之一上，这些潜在症状/标准又加载到食物成瘾（FA）的一个总体维度上。第二次CFA测试了一种一阶结构，其中FA的症状/标准直接加载到一个潜在维度上。还测试了重度肥胖住院患者组和普通人群样本之间的测量不变性（MI）。最后，进行了收敛效度、重测信度、内部一致性和患病率分析。
CFA证实了I-YFAS 2.0在层次结构和一阶结构方面的结构。分别在层次结构和一阶结构中达到了构型MI和强MI。内部一致性显示可接受。重度肥胖住院患者组中FA的患病率为24%，普通人群样本中为3.6%。
I-YFAS 2.0是评估意大利成年重度肥胖住院患者和普通人群中FA的有效且可靠的问卷，是用于临床和研究目的的心理测量学上合理的工具。
V级，描述性研究。
