Health-care Cost Impact of Continued Anticoagulation With Rivaroxaban vs Aspirin for Prevention of Recurrent Symptomatic VTE in the EINSTEIN-CHOICE Trial Population

Philip S. Wells, Martin H. Prins, Jan Beyer-Westendorf, Anthonie W.A. Lensing, Lloyd Haskell, Bennett Levitan, François Laliberté, Veronica Ashton, Yongling Xiao, Dominique Lejeune, Concetta Crivera, Patrick Lefebvre, Qi Zhao, Zhong Yuan, Jeff Schein, Paolo Prandoni

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Background: Using data from the Reduced-Dose Rivaroxaban in the Long-Term Prevention of Recurrent Symptomatic Venous Thromboembolism (EINSTEIN-CHOICE) trial, this study assessed cost impact of continued anticoagulation therapy with rivaroxaban vs aspirin. Methods: Total health-care costs (2016 USD) associated with rivaroxaban and aspirin were calculated as the sum of clinical event costs and drug costs from a US managed care perspective. Clinical event costs were calculated by multiplying event rate by cost of care. One-year Kaplan-Meier clinical event rates for recurrent pulmonary embolism, recurrent DVT, all-cause mortality, and bleeding were obtained from EINSTEIN-CHOICE. Cost of care was determined by literature review. Drug costs were the product of drug price (wholesale acquisition cost) and treatment duration. A one-way sensitivity analysis was conducted. Results: Rivaroxaban users had lower per patient per month (PPPM) clinical event costs compared with aspirin users ($123, $243, and $381 for rivaroxaban 10 mg, rivaroxaban 20 mg, and aspirin, respectively). However, vs aspirin, PPPM total health-care costs were $24 higher for patients treated with rivaroxaban 10 mg ($143 higher for rivaroxaban 20 mg) due to higher cost of rivaroxaban. With a 15% discount for rivaroxaban 10 mg, the lower cost of clinical events for the rivaroxaban-treated patients more than fully offset the higher drug costs, and yielded a $19 lower total health-care cost. Conclusions: Continued therapy with rivaroxaban 10 and 20 mg vs aspirin was associated with lower clinical event costs but higher total health-care costs; with a 15% drug discount rivaroxaban 10 mg had lower total health-care costs than aspirin.

Original languageEnglish
Pages (from-to)1371-1378
Number of pages8
JournalChest
Volume154
Issue number6
DOIs
StatePublished - Dec 2018
Externally publishedYes

Keywords

  • anticoagulants
  • aspirin
  • cost comparison
  • economic analysis
  • extended treatment
  • recurrent VTE
  • rivaroxaban

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