• Open Access

The cost-utility of maintenance treatment with venlafaxine in patients with recurrent major depressive disorder

Authors


  • Disclosures P. Sobocki and M. Ekman received funding for this study from Wyeth. At the time this study was completed, P. Sobocki was an employee of European Health Economics, Stockholm, Sweden. A. Ovanfors and R. Khandker are employees of Wyeth. B. Jönsson has been a consultant and speaker for several companies marketing antidepressants, including Wyeth.

  • Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation.

Mattias Ekman, i3 Innovus, Vasagatan 38, SE-11120 Stockholm, Sweden
Tel.: + 46 8 545 28 545
Fax: + 46 8 545 28 549
Email: mattias.ekman@i3innovus.se

Summary

Aims:  The Prevention of Recurrent Episodes of Depression with venlafaxine XR for Two Years trial has reported advantages with maintenance treatment for patients with recurrent depressive disorder. The aim of this study was to assess the cost-utility of maintenance treatment with venlafaxine in patients with recurrent major depressive disorder, based on a recent clinical trial.

Methods:  A Markov simulation model was constructed to assess the cost-utility of maintenance treatment for 2 years in recurrently depressed patients in Sweden. Risk of relapse and recurrence was based on a recent randomised clinical trial assessing the efficacy and tolerability of maintenance treatment with venlafaxine over 2 years. Costs and quality of life estimations were retrieved from a naturalistic longitudinal observational study conducted in Sweden. Health effects were quantified as quality-adjusted life-years (QALYs). Sensitivity analyses were conducted on key parameters employed in the model.

Results:  In the base-case analysis, the cost per QALY gained of venlafaxine compared with no treatment was estimated at $18,500 over 2 years. In a probabilistic sensitivity analysis, we found that maintenance treatment with venlafaxine is cost-effective with 90% probability at a willingness to pay per QALY of $67,000 or less. Our long-term analyses also indicate that even under conservative assumptions about future risks of recurrences, maintenance treatment is cost-effective.

Conclusion:  The present study indicates that maintenance treatment for 2 years with venlafaxine is cost-effective in patients with recurrent major depressive disorder.

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