Article ID Journal Published Year Pages File Type
4210219 Respiratory Medicine 2012 12 Pages PDF
Abstract

SummaryObjectiveTo evaluate the cost-utility of adding tiotropium to usual care versus usual care alone for patients with moderate to very severe chronic obstructive pulmonary disease (COPD) in the UK and Belgium.MethodsA four-state Markov model was developed with three disease severity states (moderate, severe, very severe) and death. Severity was based on post-bronchodilator FEV1 and transitions were based on outcomes of the Understanding Potential Long Term Impacts on Function with Tiotropium (UPLIFT®) trial. Utilities were derived from EQ-5D scores for a subset of UPLIFT® patients. UK costs were evaluated separately for England (E), and for Scotland, Wales and Northern Ireland (SWNI). Belgian (B) costs were obtained from local sources. Uncertainty was assessed by deterministic and probabilistic sensitivity analysis (PSA).ResultsAdding tiotropium to usual care resulted in an incremental cost per patient of €969 (B), £796 (E), and £812 (SWNI), and incremental QALYs of 0.052 (B), and 0.051 (E, SWNI). The four-year incremental cost-effectiveness ratios (ICER) were €18,617 (B), £15,567 (E) and £15,890 (SWNI) per QALY. Probability of tiotropium being cost-effective at £30,000 (€50,000) per QALY gained was greater than 60%.ConclusionsAt willingness to pay thresholds of £(€) 30,000 per QALY gained, adding tiotropium to usual care is cost-effective.

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