Translation and validation of the IBD-disk for assessing disability in Spanish-speaking patients with inflammatory bowel disease.

BACKGROUND AND AIMS: Assessment of IBD patients based on patient reported outcome measures has an increasing interest worldwide for both clinical practice and biomedical research. One of the most common and easy-to-use tools is the IBD-Disk, which assesses the disability status of IBD patients. However, there is no validated version for Spanish-speaking patients. The aim of the study is to translate and validate a Spanish version of the IBD-Disk. METHODS: The original English version of the IBD-Disk was translated, linguistically and culturally validated in a Spanish speaking cohort of IBD patients from Spain and Latin America and tested in comparison with the Spanish version of the IBD-disability index (IBD-DI) after 24 weeks of follow-up. RESULTS: Globally, 102 patients were enrolled (52 Crohn's Disease and 50 ulcerative colitis). Internal consistency was 0.925 [95% CI: 0.902-0.945]. Intraclass correlation coefficient was 0.956 between baseline (T0) and week 1 (T1) [95% CI: 0.936-0.970] indicating satisfactory test-retest. Correlation with IBD-DI was 0.912 [95% CI: 0.872-0.940]. Activity indices were shown to be independent factors associated with IBD-Disk. CONCLUSIONS: The Spanish version of the IBD-Disk shows adequate internal consistency and test-retest, and convergent validity, thus confirming its utility in controlling global health status in IBD patients.