Validation of the IMPACT-III quality of life questionnaire in Swiss children with inflammatory bowel disease

Werner, Helene; Landolt, Markus A; Buehr, Patrick; Koller, Rebekka; Nydegger, Andreas; Spalinger, Johannes; Heyland, Klaas; Schibli, Susanne; Braegger, Christian P (2014). Validation of the IMPACT-III quality of life questionnaire in Swiss children with inflammatory bowel disease. Journal of Crohn's & Colitis, 8(7), pp. 641-648. Elsevier 10.1016/j.crohns.2013.11.025

Full text not available from this repository.

BACKGROUND AND AIMS

Inflammatory bowel disease (IBD) frequently manifests during childhood and adolescence. For providing and understanding a comprehensive picture of a patients' health status, health-related quality of life (HRQoL) instruments are an essential complement to clinical symptoms and functional limitations. Currently, the IMPACT-III questionnaire is one of the most frequently used disease-specific HRQoL instrument among patients with IBD. However, there is a lack of studies examining the validation and reliability of this instrument.

METHODS

146 paediatric IBD patients from the multicenter Swiss IBD paediatric cohort study database were included in the study. Medical and laboratory data were extracted from the hospital records. HRQoL data were assessed by means of standardized questionnaires filled out by the patients in a face-to-face interview.

RESULTS

The original six IMPACT-III domain scales could not be replicated in the current sample. A principal component analysis with the extraction of four factor scores revealed the most robust solution. The four factors indicated good internal reliability (Cronbach's alpha=.64-.86), good concurrent validity measured by correlations with the generic KIDSCREEN-27 scales and excellent discriminant validity for the dimension of physical functioning measured by HRQoL differences for active and inactive severity groups (p<.001, d=1.04).

CONCLUSIONS

This study with Swiss children with IBD indicates good validity and reliability for the IMPACT-III questionnaire. However, our findings suggest a slightly different factor structure than originally proposed. The IMPACT-III questionnaire can be recommended for its use in clinical practice. The factor structure should be further examined in other samples.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
UniBE Contributor:	Spalinger, Johannes, Schibli, Susanne
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1873-9946
Publisher:	Elsevier
Language:	English
Submitter:	Anette van Dorland
Date Deposited:	19 Mar 2015 15:33
Last Modified:	05 Dec 2022 14:44
Publisher DOI:	10.1016/j.crohns.2013.11.025
PubMed ID:	24342766
Uncontrolled Keywords:	Children, Inflammatory bowel disease, Quality of life, Validation
URI:	https://boris.unibe.ch/id/eprint/65291