Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ahvaz Jundishapur University of Medical Sciences

Patient assessment of constipation quality of life questionnaire: Translation, cultural adaptation, reliability, and validity of the persian version

Nikjooy, A. and Jafari, H. and Saba, M. A. and Ebrahimi, N. and Mirzaei, R. (2018) Patient assessment of constipation quality of life questionnaire: Translation, cultural adaptation, reliability, and validity of the persian version. Iranian Journal of Medical Sciences, 43 (3). pp. 261-268. ISSN 02530716 (ISSN)

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Abstract

Background: The Patient Assessment of Constipation Quality of Life (PAC-QOL) questionnaire is the most validated and the most specific tool for measuring the quality of life of patients with constipation. Over 120 million people live in countries whose official language is Persian. There is no reported Persian version of the PAC-QOL questionnaire yet. The aim of this study was to translate and culturally adapt the PAC-QOL questionnaire and to assess its reliability and validity among Persian patients with chronic constipation. Methods: Following the translation and cultural adaptation of the PAC-QOL questionnaire to Persian, 100 patients (mean±SD age=40.51±13.67) with constipation were recruited for validity measurement and 20 patients were re-examined for reliability. Content validity was assessed based on the opinions of an expert committee and the floor/ceiling effect. Construct validity was evaluated according to the hypothesis test. The SF-36 questionnaire was used for concurrent criterion validity, intraclass correlation coefficient for reliability, and Cronbach’s alpha for internal consistency. Results: The content validity of the PAC-QOL questionnaire was proven, and there was no floor/ceiling effect. Construct validity also was confirmed based on the hypothesis test. The overall Cronbach’s alpha of the PAC-QOL questionnaire was 0.92 (range=0.72–0.92), and the overall intra-class correlation coefficient of the questionnaire was 0.88 (range=0.69–0.87). The correlation between the SF-36 and PAC-QOL questionnaires was moderate. Conclusion: The Persian version of the PAC-QOL questionnaire demonstrated good validity and reliability properties in chronic constipation. Accordingly, Persian researchers and clinicians can benefit from this questionnaire in further research and assessment of treatment outcomes. © 2018, Shiraz University of Medical Sciences. All rights reserved.

Item Type: Article
Keywords: Constipation Quality of life Questionnaire Reliability Validity
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine, Health and Life Sciences
Depositing User: مهندس مهدی شریفی
Last Modified: 01 Jun 2018 13:09
URI: http://eprints.ajums.ac.ir/id/eprint/18081

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