Validation of the inflammatory bowel disease disability index for self-report and development of an item-reduced version.
Crohn's disease
disability, self-report
inflammatory bowel disease
ulcerative colitis
Journal
Journal of gastroenterology and hepatology
ISSN: 1440-1746
Titre abrégé: J Gastroenterol Hepatol
Pays: Australia
ID NLM: 8607909
Informations de publication
Date de publication:
Jan 2019
Jan 2019
Historique:
received:
25
03
2018
revised:
28
08
2018
accepted:
16
09
2018
pubmed:
3
10
2018
medline:
6
5
2019
entrez:
3
10
2018
Statut:
ppublish
Résumé
The Inflammatory Bowel Disease Disability Index (IBD-DI) is a measure of disability in inflammatory bowel disease (IBD). The IBD-DI is validated for use as a clinical interview but not for use as a self-report questionnaire. We aimed to validate the IBD-DI for self-report (IBD-DI-SR) and to reduce the number of items, using IBD patients from two centers. Between April and August 2017, ambulatory IBD patients were recruited from Christchurch Hospital, New Zealand and Concord Hospital, Australia. The IBD-DI clinical interview version was compared with a self-report version. Participants were randomized to do the clinical interview or self-report first. Validation of the IBD-DI-SR involved calculating the correlation coefficient between the clinician completed and self-reported version of the IBD-DI and Cronbach's α of internal consistency of the IBD-DI-SR. To create an item-reduced version, multiple linear regression was used. The R One hundred fourteen patients (57 from Christchurch and 57 from Sydney) completed the IBD-DI-SR validation phase, of whom 63 had Crohn's disease and 51 had ulcerative colitis. The Pearson correlation coefficient between the IBD-DI-SR and IBD-DI is 0.90 (P < 0.001), and Cronbach's α of the IBD-DI-SR was 0.86. The item-reduced version of the IBD-DI-SR consisted of eight questions instead of 28, explaining 77% of the variance. The IBD-DI-SR has demonstrated reliability and validity. The item-reduced IBD-DI-SR is a concise self-report instrument for measuring IBD disability, which makes the IBD-DI more widely usable.
Sections du résumé
BACKGROUND AND AIM
OBJECTIVE
The Inflammatory Bowel Disease Disability Index (IBD-DI) is a measure of disability in inflammatory bowel disease (IBD). The IBD-DI is validated for use as a clinical interview but not for use as a self-report questionnaire. We aimed to validate the IBD-DI for self-report (IBD-DI-SR) and to reduce the number of items, using IBD patients from two centers.
METHODS
METHODS
Between April and August 2017, ambulatory IBD patients were recruited from Christchurch Hospital, New Zealand and Concord Hospital, Australia. The IBD-DI clinical interview version was compared with a self-report version. Participants were randomized to do the clinical interview or self-report first. Validation of the IBD-DI-SR involved calculating the correlation coefficient between the clinician completed and self-reported version of the IBD-DI and Cronbach's α of internal consistency of the IBD-DI-SR. To create an item-reduced version, multiple linear regression was used. The R
RESULTS
RESULTS
One hundred fourteen patients (57 from Christchurch and 57 from Sydney) completed the IBD-DI-SR validation phase, of whom 63 had Crohn's disease and 51 had ulcerative colitis. The Pearson correlation coefficient between the IBD-DI-SR and IBD-DI is 0.90 (P < 0.001), and Cronbach's α of the IBD-DI-SR was 0.86. The item-reduced version of the IBD-DI-SR consisted of eight questions instead of 28, explaining 77% of the variance.
CONCLUSIONS
CONCLUSIONS
The IBD-DI-SR has demonstrated reliability and validity. The item-reduced IBD-DI-SR is a concise self-report instrument for measuring IBD disability, which makes the IBD-DI more widely usable.
Types de publication
Journal Article
Multicenter Study
Observational Study
Validation Study
Langues
eng
Sous-ensembles de citation
IM
Pagination
92-102Informations de copyright
© 2018 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd.