Validation of a specific quality of life questionnaire for functional digestive disorders
Open accessAbstract
BACKGROUND: Dyspepsia and irritable bowel syndrome are suitable conditions for assessment of quality of life. Their similarities justify the elaboration of a single specific questionnaire for the two conditions. AIMS: To examine the process leading to the validation of the psychometric properties of the functional digestive disorders quality of life questionnaire (FDDQL). METHODS: Initially, the questionnaire was given to 154 patients, to assess its acceptability and reproducibility, analyse its content, and reduce the number of items. Its responsiveness was tested during two therapeutic trials which included 428 patients. The questionnaire has been translated into French, English, and German. The psychometric validation study was conducted in France, United Kingdom, and Germany by 187 practitioners. A total of 401 patients with dyspepsia or irritable bowel syndrome, defined by the Rome criteria, filled in the FDDQL and generic SF-36 questionnaires. RESULTS: The structure of the FDDQL scales was checked by factorial analysis. Its reliability was expressed by a Cronbach’s α coefficient of 0.94. Assessment of its discriminant validity showed that the more severe the functional digestive disorders, the more impaired the quality of life (p<0.05). Concurrent validity was supported by the correlation found between the FDDQL and SF-36 questionnaire scales. The final version of the questionnaire contains 43 items belonging to eight domains. CONCLUSIONS: The properties of the FDDQL questionnaire, available in French, English, and German, make it appropriate for use in clinical trials designed to evaluate its responsiveness to treatment among patients with dyspepsia and irritable bowel syndrome.
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The discomfort dimension of the FDDQL questionnaire was able to capture the improvement in multiple IBS symptoms.
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- Authors
- Chassany, O., Marquis, P., Scherrer, B., Read, N. W., Finger, T., Bergmann, J. F., Fraitag, B., Geneve, J., & Caulin, C.
- Affiliations
- Northern General Hospital (GB)
- aService de Médecine, Hôpital Lariboisière, 75010 Paris, France, bMAPI Values, 27 rue de la Villette, 69003 Lyon, France, cInstitut de Recherche Jouveinal, 3–9 rue de la Loge, 94265 Fresnes, France, dNorthern General Hospital, Herries Road, Sheffield S5 7AU, UK, eQuali-team, Frankfurter Strasse 47, D 35037 Marburg, Germany
- Corresponding author
- Chassany, O
- Venue
- Gut
- Publisher
- BMJ
- Published
- 1999-04-01
- Volume
- 44
- Issue
- 4
- Pages
- 527-533
- ISSN
- 0017-5749 (ISSN-L)
- 1468-3288
- PMC
- PMC1727453
- OpenAlex
- W2132771991
- Semantic Scholar
- d9f68308412513e4355727033c850a0edd37d819
- Cited by
- 180
- References
- 33
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 3 · 2023: 1 · 2022: 10 · 2021: 11 · 2020: 8 · 2019: 4 · 2018: 7 · 2017: 5 · 2016: 7 · 2015: 7 · 2014: 6 · 2013: 7 · 2012: 8
- FWCI
- 6.51
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Gut (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- HighWire Press Open Archive (submittedVersion)
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Social Sciences › Education › Health Education and Validation
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Health Systems, Economic Evaluations, Quality of Life
- Keywords
- functional digestive disorders, quality of life, dyspepsia, irritable bowel syndrome, psychometric validation, questionnaire translation, responsiveness, SF-36, factor structure, discriminant validity, concurrent validity, Rome criteria
- MeSH terms
- Adult, Aged, Colonic Diseases, Functional, Double-Blind Method, Dyspepsia, Female, France, Health Status Indicators, Humans, Male, Middle Aged, Patient Compliance, Psychometrics, Quality of Life, Surveys and Questionnaires, Reproducibility of Results, Treatment Outcome
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