Department of Occupational Therapy, The Faculty of Health Sciences, Ariel University, Ariel.
Department of Occupational Therapy, Faculty of Social Welfare & Health Sciences University of Haifa, Mount Carmel, Haifa, Israel.
Eur J Gastroenterol Hepatol. 2022 Jan 1;34(1):39-47. doi: 10.1097/MEG.0000000000002051.
The celiac disease quality of life questionnaire (CDDUX) is used widely in numerous languages worldwide. However, it's structural and construct validity and child-parent invariance had not been thoroughly examined. The objective of this study was to examine the psychometric properties of the 12-item CDDUX and the extent to which it meets the acceptable requirements of reliability and structural and convergent validity, as well as its child-parent invariance.
In this cross-sectional study, 126 dyads of children aged 8-18 years and their parents completed the Hebrew version self-report and parent-proxy report CDDUX. Recently developed methods to examine psychometric properties and to measure invariance of dyadic samples were used while properly accounting for nonindependence in measurement patterns.
A three-factor structure, each with sufficient internal consistency, is confirmed for both children and parents. Removing a single indicator of the diet subscale resulted in full configural (χ2(181) = 202.277, P > 0.05, RMSEA = 0.026) and metric (χ2(189) = 209.543, P > 0.05, RMSEA = 0.043) invariance of the measure between children and parents. However, this occurred only in partial-scalar (χ2(198) = 229.813, P > 0.05, RMSEA = 0.031) and uniqueness invariance, which is nevertheless sufficient for meaningful comparison between the groups.
Overall, with minor modifications, the Hebrew version of the CDDUX was found to be a valid measure of children's celiac-related quality of life when measured across children's self-reports and parent-proxy reports. The CDDUX provides meaningful measurement and allows child-parent comparison.
腹腔疾病生活质量问卷（CDDUX）广泛用于全球多种语言。然而，其结构和构念效度以及儿童-父母的不变性尚未得到彻底检验。本研究的目的是检验 12 项 CDDUX 的心理测量特性，以及其在可靠性、结构和收敛效度方面达到可接受要求的程度，以及其儿童-父母的不变性。
在这项横断面研究中，126 对 8-18 岁的儿童及其父母完成了希伯来语版本的自我报告和父母代理报告 CDDUX。使用最近开发的方法来检验心理测量特性，并衡量对偶样本的不变性，同时适当考虑测量模式的非独立性。
确认了儿童和父母都具有足够内部一致性的三因素结构。从饮食分量表中删除一个单一指标会导致完整的构形（χ2(181) = 202.277，P > 0.05，RMSEA = 0.026）和度量（χ2(189) = 209.543，P > 0.05，RMSEA = 0.043）在儿童和父母之间的测量不变性。然而，这仅在部分标度（χ2(198) = 229.813，P > 0.05，RMSEA = 0.031）和独特性不变性下发生，尽管如此，这对于两组之间的有意义比较仍然是足够的。
总体而言，希伯来语版 CDDUX 经过轻微修改，被发现是一种有效的儿童腹腔疾病相关生活质量测量工具，可用于测量儿童的自我报告和父母代理报告。CDDUX 提供有意义的测量，并允许儿童-父母比较。
