Introduction The use of patient reported outcome measures to support routine inflammatory bowel disease (IBD) care is not widespread, and suggests that existing questionnaires lack relevance to day-to-day decisions or are too cumbersome to administer.
Dr Keith Bodger and colleagues from the United Kingdom developed a simple, generic tool for capturing disease control from the patient's perspective to address these barriers.
Development based on literature review, patient focus groups/interviews and a steering group, defining a limited set of generic questions.
The ‘IBD-Control’ questionnaire comprises 13 items plus a visual analogue scale (VAS).
|Completion time was 1 min 15 seconds|
Prospective validation involved baseline completion of IBD-Control, quality of life (QoL) questionnaire (UK-IBD-Q), EuroQol (EQ-5D), Hospital Anxiety and Depression Score, and clinician assessment.
The team reported that 299 patients returned baseline surveys, and 138 attended for repeat visits.
The researchers observed that completion time was 1 min 15 seconds.
The team found a strong correlation between IBD-Control-8 and IBD-Control-VAS.
For test-retest reliability, the intra-class correlation was 0.97 for IBD-Control-8, and 0.96 for IBD-Control-VAS.
Construct validity showed moderate-to-strong correlations between IBD-Control-8 and IBD-Control-VAS versus activity indices, UK-IBD-Q and EQ-5D (utility) with r values 0.52–0.86.
Sensitivity to change demonstrated effect sizes of 0.76–1.44.
Dr Bodger and team conclude, "The IBD-Control is a rapid, reliable, valid and sensitive instrument for measuring overall disease control from the patient's perspective."
"Unlike existing patient reported outcome measures, its simplicity, ease-of-use and generic applicability make it a candidate for supporting routine care."