Do Case Rates Affect Physicians' Clinical Practice in Radiation Oncology?: An Observational Study

Area of Science:

• Health Economics
• Oncology
• Healthcare Management

Background:

• Fee-for-service models can lead to over or under-treatment.
• Case rate payments aim to improve care quality and efficiency.
• Radiation oncology payment models impact treatment delivery.

Purpose of the Study:

• To evaluate the impact of case rate payments on adherence to clinical guidelines in radiation oncology.
• To compare treatment fractions administered under case rates versus fee-for-service.
• To assess changes in under-treatment and over-treatment rates.

Main Methods:

• Quasi-experimental study comparing a multi-site radiation oncology provider before and after case rate implementation.
• Analysis of patient claims data for bone metastases, breast, lung, prostate, and skin cancer.
• Utilized relative risks (RR) to compare guideline-based care proportions pre- and post-payment model change.

Main Results:

• No significant change in guideline-based care for breast, lung, and skin cancer.
• Increased likelihood of guideline-based care for bone metastases (RR=2.0) and prostate cancer (RR=1.1).
• Significant reduction in under-treatment from 4% to 0% (p=0.008); over-treatment remained stable at 9% (p=0.20).

Conclusions:

• Case rate payments did not negatively affect guideline-based care in the studied radiation oncology setting.
• The payment model showed a positive impact on specific cancer types and reduced under-treatment.
• Further research is needed to confirm these findings in diverse populations and settings.