• Angelika Hüppe, Jana Langbrandtner, Cassandra Lill, and Heiner Raspe.
• Institute of Social Medicine and Epidemiology, University of Lübeck; Center for Population Medicine and Health Services Research, University of Lübeck.
• Dtsch Arztebl Int. 2020 Feb 7; 117 (6): 89-96.

BackgroundThe poor evidence base is a major problem for the German rehabilitation sector. This trial focused on testing the efficacy and benefit of inpatient medical rehabilitation compared to routine care in a single common entity, namely, chronic inflammatory bowel disease (IBD).MethodsThis pragmatic, multicenter, randomized controlled trial with a parallel group design included gainfully employed patients with IBD who were covered by one of four statutory health insurance providers. Patients in the intervention group were actively advised regarding options for rehabilitation and given support in applying for it; patients in the control group continued with the care they had been receiving before participation in the trial. The primary endpoint was social participation, and there were various secondary endpoints, including disease activity and sick days taken off from work. All parameters were assessed by questionnaire at the beginning of the trial and twelve months later. This was trial no. DRKS00009912 in the German clinical trials registry.ResultsIn a complete case analysis, the intervention group (211 patients, of whom 112 underwent rehabilitation) did better than the control group (220 patients, of whom 15 underwent rehabilitation) in multiple respects. The reported limitation in social participation was reduced by 7.3 points in the intervention group and 2.9 points in the control group (p = 0.018; d = 0.23). Significant improvements were also seen in disease activity, vitality, health-related quality of life, and self-management, with effect sizes between 0.3 and 0.4. No benefit was seen in outcomes related to working capacity. Sensitivity analyses lent further support to the findings.ConclusionRehabilitation research can be conducted with individually randomized, controlled trials. The findings of this trial indicate the absolute effectiveness of ied rehabilitation for IBD patients, as well as its additional benefit compared to routine care.

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