BACKGROUND: Fatigue, pain, and faecal urgency or incontinence are common, debilitating symptoms in inflammatory bowel disease (IBD). We developed IBD-BOOST, a digital, interactive, facilitator-supported, self-management intervention, and aimed to assess its effects compared with care as usual in relieving these symptoms and improving quality of life.
METHODS: This multicentre, parallel, randomised controlled trial was conducted online in the UK, with allocation concealment maintained. Participants aged 18 years or older with IBD who rated the impact of fatigue, pain, and faecal urgency or incontinence as 5 or more on a 0-10 scale in a UK national survey were invited. Participants were randomly assigned (1:1) to the online IBD-BOOST programme or care as usual for 6 months via computer-generated randomisation. Primary outcomes were UK Inflammatory Bowel Disease Questionnaire (UK-IBDQ) and Global Rating of Symptom Relief at 6 months post-randomisation. All randomly assigned participants were included in the intention-to-treat and harms analysis. This trial is registered with ISRCTN.com (ISRCTN71618461) and is closed.
FINDINGS: Between Jan 20, 2020, and July 27, 2022, 4449 participants were invited to participate, and 780 participants were randomly assigned: 391 to IBD-BOOST and 389 to care as usual. 524 (67%) of 780 participants were female and 253 (32%) were male. At 6 months, there were no statistically significant differences for UK-IBDQ between the care as usual group (unadjusted mean 62·09 [SD 14·42]) and the IBD-BOOST group (unadjusted mean 60·85 [SD 16·08]; treatment effect estimate: adjusted mean difference -1·67 [95% CI -4·13 to 0·80], p=0·19) or for Global Rating of Symptom Relief (unadjusted mean 3·65 [2·75] vs 4·13 [2·81]; adjusted mean difference 0·44 [95% CI -0·56 to 1·44], p=0·39). Complier-averaged causal effects analysis demonstrated that participants who complied with IBD-BOOST reported lower UK-IBDQ scores than those who would have complied in the care as usual group (mean difference -2·39 [95%CI -4·34 to -0·45], p=0·016). Adverse events and serious adverse events were similar between the IBD-BOOST group (55 [14%] of 391) and care as usual group (79 [20%] of 389). There was one possible treatment-related serious adverse event in the IBD-BOOST group (recurrent sleep disorder) and no deaths.
INTERPRETATION: IBD-BOOST did not statistically significantly improve disease-specific quality of life or Global Rating of Symptom Relief in patients with IBD with fatigue, pain, or faecal urgency or incontinence compared with care as usual. People who complied with the intervention appeared to derive benefit. Future research should focus on enhancing compliance with interventions and targeting them to individuals most likely to benefit.
FUNDING: UK National Institute for Health and Care Research.
