A Microsimulation Model to Project the 5-Year Impact of Using Hyperbaric Oxygen Therapy for Ulcerative Colitis Patients
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ORIGINAL ARTICLE
A Microsimulation Model to Project the 5‑Year Impact of Using Hyperbaric Oxygen Therapy for Ulcerative Colitis Patients Hospitalized for Acute Flares Parambir S. Dulai1 · Vipul Jairath2 Received: 20 August 2020 / Accepted: 2 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Background Hyperbaric oxygen therapy (HBOT) improves short-term outcomes for ulcerative colitis (UC) patients hospitalized for acute flares. Longer-term impacts and cost-effectiveness are unknown. Methods We compared disease outcomes and cost-effectiveness of HBOT in addition to standard of care versus standard of care alone for UC patients hospitalized for acute flares using a microsimulation model. Published literature was used for transition probabilities, costs, and quality-adjusted life year (QALY) estimates. We modeled 100,000 individuals in each group over a 5-year horizon and compared rates of re-hospitalization, rescue medical therapy, colectomy, death, and costeffectiveness at a willingness-to-pay of $100,000/QALY. Probabilistic sensitivity analyses were performed with 500 samples and 250 trials, in addition to multiple microsimulation sensitivity analyses. Results The use of HBOT at the time of index hospitalization for an acute UC flare is projected to reduce the risk of rehospitalization, inpatient rescue medical therapy, and inpatient emergent colectomy by over 60% (p
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