Validation of the CDAT in the Polish Paediatric Population
NCT ID: NCT07142148
Last Updated: 2025-09-03
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
20 participants
OBSERVATIONAL
2026-09-30
2027-08-31
Brief Summary
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The Polish translation will be performed by two native bilingual speakers of Polish and English. Both translations will be compared and standardised. The Polish version will then be translated into English by two native bilingual speakers of English who are unfamiliar with the original English version. The translation and original will be compared to clarify discrepancies and ensure conceptual equivalence between the versions. The agreed-upon translation will be culturally adapted, if necessary. The items will be reviewed by five experts, and an I-CVI of at least 0.78 will be considered satisfactory content validity.
In the next step, 10 coeliac disease (CD) patients aged 10 years and older and 10 caregivers/parents of CD patients under 10 years of age will be asked to rate the clarity of each statement on a Likert scale \[1 = unclear to 5 = very clear\]. Questions with a mean score \<4.0 will be rephrased and re-evaluated.
Internal consistency analysis using Cronbach's alpha and the mean inter-item correlation (AIC) will be used to assess reliability. Convergent validity will be assessed by comparing scale scores with serological marker levels. Confirmatory factor analysis (CFA) will be conducted, taking into account the SRMR fit index.
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Detailed Description
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Conditions
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Study Design
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OTHER
OTHER
Interventions
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CDAT - phase 1
The English version of the Celiac Dietary Adherence Test (CDAT) will be translated into Polish using the "forward-backwards-forward" translation model, with the author's consent (already obtained by the applicants). The Polish translation will be performed by two native bilingual speakers of Polish and English. Both translations will be compared and standardised. The Polish version will then be translated into English by two native bilingual speakers of English who are unfamiliar with the original English version. The translation and original will be compared to clarify discrepancies and ensure conceptual equivalence between the versions. The agreed-upon translation will be culturally adapted, if necessary. The items will be reviewed by five experts, and an I-CVI of at least 0.78 will be considered satisfactory content validity.
CDAT - phase 2
In the next step, 10 coeliac disease (CD) patients aged 10 years and older and 10 caregivers/parents of CD patients under 10 years of age will be asked to rate the clarity of each statement on a Likert scale \[1 = unclear to 5 = very clear\]. Questions with a mean score \<4.0 will be rephrased and re-evaluated.
Internal consistency analysis using Cronbach's alpha and the mean inter-item correlation (AIC) will be used to assess reliability. Convergent validity will be assessed by comparing scale scores with serological marker levels. Confirmatory factor analysis (CFA) will be conducted, taking into account the SRMR fit index.
Eligibility Criteria
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Inclusion Criteria
* age from 2 to 18 years of age,
* consent from legal guardians (and the child in case of patients ≥16 years of age) to participate in the study.
Exclusion Criteria
* who did not consent to participate in the study (applies to patients ≥ 16 years of age).
2 Years
18 Years
ALL
No
Sponsors
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Medical University of Warsaw
OTHER
Responsible Party
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Aleksandra Banaszkiewicz
MD, PhD, Prof.
Other Identifiers
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CD-PL-CDAT
Identifier Type: -
Identifier Source: org_study_id
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