Volume 7, Issue 1 (Continuously Updated 2024)                   Func Disabil J 2024, 7(1): 0-0 | Back to browse issues page

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Moradi F, Azadi F, Vahedi M. Cross-culturally Adaptation, Validity, and Reliability of the Persian Version of the Constipation-related Disability Scale. Func Disabil J 2024; 7 (1)
URL: http://fdj.iums.ac.ir/article-1-227-en.html
1- Department of Physical Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
2- Department of Physical Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. , fa.azadi@uswr.ac.ir
3- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Abstract:   (181 Views)
Background and Objectives: Chronic functional constipation is a common condition that declines the quality of life (QoL). The constipation-related disability scale (CRDS) precisely measures the disability caused by constipation and its effect on daily activities. In this study, we translated the CRDS into Persian and evaluated its reliability and validity. 
Methods: We used the international QoL assessment procedure to translate the CRDS into Persian. The translation was then given to 145 patients (59 men and 86 women) with chronic functional constipation. Also, 130 healthy individuals completed the questionnaire to assess its discriminant validity. The Cronbach α was calculated to assess the internal consistency, and the intra-class correlation coefficient showed the tool’s reproducibility. In addition, five gastroenterologists or internists reviewed the translated version to evaluate its acceptance and content validity. The content validity ratio and content value index were calculated in this regard. Finally, the Pearson correlation test assessed the tool’s convergent validity by correlating the CRDS with the 36-item short-form survey (SF-36).
Results: The Cronbach α coefficient for total scores was found to be 0.86, indicating high internal consistency. The intra-class correlation coefficient was found to be 0.98 (95% CI, 0.96%, 0.99%), demonstrating excellent test re-test reliability. The total score of CRDS showed a strong negative correlation with the total scores of SF-36 (r=-0.89), showing its construct validity. All items of the Persian CRDS had a content validity index higher than 0.78 and a content validity ratio higher than 0.75, indicating good content validity. Furthermore, the independent t-test revealed a statistically significant difference (P < 0.05) between the healthy and diseased groups in questionnaire scores. This finding shows the tool’s ability to discriminate between healthy and sick groups. 
Conclusion: The Persian version of CRDS is suitable for evaluating constipation associated with disabilities in Persian-speaking individuals. 
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Type of Study: Research | Subject: Physiotherapy
Received: 2023/07/21 | Accepted: 2023/10/15 | Published: 2024/03/21

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