ArticleBMC gastroenterology2020
Psychometric properties of the Persian version of the celiac disease adherence test questionnaire.
Article in BMC gastroenterology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Validity and Reliability of the Turkish Version of the Celiac Dietary Adherence Test.Medicina (Kaunas, Lithuania) · 2025Article
- Gluten-Free Diet and Health-Related Quality of Life: The Validated Hellenic Version of the Celiac Dietary Adherence Test.Nutrients · 2025Article
- [Adherence factors to the gluten-free diet in people with celiac disease in Paraguay]Revista de la Facultad de Ciencias Medicas (Cordoba, Argentina) · 2024Observational
- Eating disorders, body image dissatisfaction and their association with gluten-free diet adherence among patients with celiac disease.BMC nutrition · 2024Article
- Comparison of dietary acid load score between celiac patients and healthy population.BMC nutrition · 2022Article
- The Effect of Group-Based Education on Knowledge and Adherence to a Gluten-Free Diet in Patients with Celiac Disease: Randomized Controlled Clinical Trial.International journal of behavioral medicine · 2021Article
- Determinants of health-related quality of life in patients with celiac disease: a structural equation modeling.Health and quality of life outcomes · 2021Article
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6 authors.
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Abstract
backgroundA gluten-free diet (GFD) is the only effective treatment for celiac patients and assessing adherence to this diet is important. Celiac disease Adherence Test (CDAT) is a valid English-language questionnaire that is used for assessing the adherence to the GFD. In the present study, we aimed to translate the CDAT questionnaire in Persian and evaluate its validity and reliability.
methodsIn the present cross-sectional study, CDAT was translated and back-translated by three bilingual professional translators. Content validity was evaluated by 12 gastroenterologists and nutritionists. To assess the construct validity, 230 patients with celiac disease were randomly selected from the national celiac disease registry database. Internal consistency of the items and test-retest reliability were assessed by Cronbach's alpha and Intraclass Correlation Coefficient (ICC). To assess the convergent validity of the questionnaire, the correlation coefficient between the CDAT score and anti-tissue transglutaminase immunoglobulin A (anti-t-TG-IgA) titer was assessed.
resultsThe content validity index, content validity ratio, and impact score of the Persian version of CDAT (Pv-CDAT) were 0.97, 0.95, and 4.61 respectively. Three significant factors were extracted and according to the confirmatory factor analysis the three-factor model had adequate fitness (chi-square p-value of 0.74, root mean error of approximation: 0.001 [95% CI: 0.001-0.083], comparative fit index: 1, standardized root mean squared residual: 0.04, and coefficient of determination: 0.78). The questionnaire had good feasibility with the floor effect of 3.1% and the ceiling effect of 0.4%. Moreover, it has high internal consistency (Cronbach-alpha: 0.71) and test-retest reliability (ICC: 0.78). The correlations between CDAT categories and anti-tTG-IgA categories showed a significant correlation between the two tests (r = 0.53; P < 0.001).
conclusionsThe results of the present study showed that the Pv-CDAT questionnaire with high validity, reliability, and internal consistency can be used for assessing adherence to the GFD in adult celiac patients in Iran.
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