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Published on: July 7, 2023
Evaluating Treatment Sequences in Major Depressive Disorder Using an Open-Source Health Economic Model Based on
Alice Kate Cummings-Joyner1, Richard H Chapman2, Yuan-Yuan Michelle Cheng2
1Medicus Economics LLC, Milton, MA, USA.
This study developed a simulation model to evaluate major depressive disorder (MDD) treatment sequences. Certain sequences, like SSRI followed by SNRI and other combinations, showed better value than no treatment or SSRI monotherapy over five years.
Area of Science:
- Health Economics
- Pharmacoeconomics
- Clinical Research
Background:
- Major depressive disorder (MDD) poses a significant public health challenge, necessitating effective treatment strategies.
- Optimizing treatment sequences is crucial for improving patient outcomes and managing healthcare costs in MDD.
Purpose of the Study:
- To develop and utilize a patient-level discrete event simulation model to assess the economic value of various treatment sequences for newly diagnosed adult patients with MDD.
- To compare the cost-effectiveness of different treatment pathways, including monotherapy, combination therapy, and no treatment, over a five-year period.
Main Methods:
- A discrete event simulation model was developed, incorporating patient heterogeneity and real-world treatment pathways.
- Model specifications were informed by stakeholder engagement, literature review, and claims data analysis.
- Key outcomes included time-to-response, remission rates, net monetary benefit (NMB), and incremental cost-effectiveness ratios (ICERs).
Main Results:
- All modeled treatment sequences, including those with Selective Serotonin Reuptake Inhibitors (SSRIs), were superior to no treatment in terms of quality-adjusted life years (QALYs) and NMB.
- A specific sequence (SSRI, SNRI, SNRI + atypical antidepressant, SNRI + antipsychotic) demonstrated higher QALYs and NMB than four lines of SSRI, with an ICER of approximately $28,000/QALY.
- SSRI followed by SSRI plus intensive psychotherapy was not cost-effective due to high costs and modest QALY gains.
Conclusions:
- Treatment sequences involving combinations of pharmacotherapy and psychotherapy can offer significant value in managing MDD.
- The developed simulation model provides valuable insights into the relative effectiveness and cost-effectiveness of different MDD treatment strategies.
- Informed decision-making regarding treatment pathways is essential for optimizing patient care and outcomes in major depressive disorder.
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