Author of

• 10692

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  P1.08 - Poster Session 1 - Radiotherapy (ID 195)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Radiation Oncology + Radiotherapy
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 10706

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    P1.08-014 - PET-based radiotherapy planning is highly cost-effective compared to CT-based planning: a model-based evaluation. (ID 1608)

    09:30 - 16:30  |  Author(s): M.L. Bongers
    • Abstract

    Methods
    The cost-effectiveness analysis was performed using a previously developed decision model that simulates the disease progression of individual lung cancer patients until they are deceased or have reached a pre-specified time-horizon of 3 years. Simulated patients move from the start of radiotherapy treatment to the absorbing state of death, potentially visiting the intermediate health states ‘local recurrence’ and ‘metastasis’. Transition rates in the model were estimated by multi-state statistical modelling and include the impact of patient and tumour features on disease progression. Data for model quantification was available for 200 NSCLC patients with inoperable stage I-IIIB, provided by the Maastro Clinic. Resource use estimates, costs and utilities were obtained from the data of the Maastro Clinic, the literature and Dutch guidelines. Primary outcomes were the difference in life years, quality adjusted life years and costs and the incremental cost-effectiveness and cost-utility ratio (ICER and ICUR) of PET-CT versus CT based radiotherapy planning. Model outcomes were obtained from averaging the outcome for 50 000 simulated patients. A probabilistic sensitivity analysis was done as well as a number of scenario analyses.

    Results
    The incremental costs of PET-CT based planning were €581 (95% CI: €-4474 – €6064) for 0,42 incremental life years (95% CI: 0,20 – 0,62) and 0,33 quality adjusted life years gained (95% CI: 0,16 – 0,54) (figure 1). The base-case scenario resulted in an ICER of €1370 per life year gained and an ICUR of €1761 per quality adjusted life year gained. The probabilistic analysis gave a 35% probability that PET-CT based planning improves health outcomes at reduced costs and a 65% probability that PET-CT based planning is more effective at slightly higher costs.Figure 1 Figure 1. Results of probabilistic sensitivity analyses showing incremental costs and incremental life years for PET-CT-based radiotherapy treatment planning compared to CT-based radiotherapy treatment planning.