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IMPACT-III is a valid and reliable questionnaire for assessing health-related quality of life in Swedish children with inflammatory bowel disease
Umeå University, Faculty of Medicine, Department of Nursing.
Umeå University, Faculty of Medicine, Department of Nursing.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Statistics. Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
2018 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 107, no 2, p. 347-353Article in journal (Refereed) Published
Abstract [en]

Aim: This study examined the reliability, validity and factor structure of the Swedish version of the IMPACT-III questionnaire for assessing health-related quality of life in children with inflammatory bowel disease.

Methods: We recruited 202 participants aged eight to 18years, who were enrolled from 16 of the 23 paediatric gastroenterology clinics across Sweden during 2010-2013. This cross-sectional study compared two versions of the IMPACT-III questionnaire - one with six factors and 35 items and one with four factors and 19 items - plus the Paediatric Quality of Life Inventory 4.0 Generic Core Scale. Disease activity was assessed and defined as active or inactive.

Results: The mean total score for the six-factor IMPACT-III scale was 143.7/175, with a standard deviation (SD) of 17.9. There was a significant difference in mean total scores between the 133 children with inactive disease (147.8, SD: 14.9) and the 52 with active disease (133.0, SD: 20.3). Confirmatory factor analysis showed that the four-factor scale was more robust than the original six-factor scale. Concurrent validity and discriminant validity were high for both versions.

Conclusion: The Swedish version of the IMPACT-III questionnaire was valid and reliable, but the shorter, four-factor version is quicker and may be more convenient in clinical settings.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 107, no 2, p. 347-353
Keywords [en]
health-related quality of life, IMPACT-III, paediatric inflammatory bowel disease, Sweden, validity
National Category
Pediatrics
Identifiers
URN: urn:nbn:se:umu:diva-144391DOI: 10.1111/apa.14119ISI: 000419768200031PubMedID: 29032599OAI: oai:DiVA.org:umu-144391DiVA, id: diva2:1182472
Available from: 2018-02-13 Created: 2018-02-13 Last updated: 2018-06-09Bibliographically approved

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Lindh, VivecaLind, TorbjörnLindkvist, Marie

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