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Related Experiment Videos

Studying radiation therapy using SEER-Medicare-linked data.

Beth A Virnig1, Joan L Warren, Gregory S Cooper

  • 1Division of Health Services Research and Policy, University of Minnesota, Minneapolis, Minnesota 55455, USA. virni001@tc.umn.edu

Medical Care
|August 21, 2002
PubMed
Summary
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The Surveillance, Epidemiology, and End Results (SEER) and Medicare databases show high agreement in reporting radiation therapy use for cancer patients. Combining both SEER-Medicare data ensures the most complete assessment of radiation treatment patterns.

Area of Science:

  • Oncology
  • Health Services Research
  • Data Science

Background:

  • Numerous studies utilize SEER and Medicare data for radiation therapy assessment.
  • The completeness of these data sources has not been previously evaluated.

Purpose of the Study:

  • To evaluate the completeness and agreement between SEER and Medicare data for radiation therapy use.
  • To determine the reliability of each data source for assessing cancer treatment patterns.

Main Methods:

  • A cohort of incident cancer cases (breast, endometrial, lung, prostate, rectal) aged 65+ from 1991-1996 was created using linked SEER-Medicare data.
  • Radiation therapy use reported in SEER was compared with Medicare claims data for initial treatment courses.

Main Results:

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  • High agreement was observed between SEER and Medicare data for radiation therapy use across various cancer types.
  • Agreement rates ranged from 88% (lung cancer) to 95% (endometrial cancer).
  • Radiation claims were identified within MedPAR Physician Supplier Part B and Outpatient Medicare files.

Conclusions:

  • SEER and Medicare data demonstrate high agreement in reporting radiation treatments post-cancer diagnosis.
  • Either SEER or Medicare data can be independently used to assess radiation treatment patterns.
  • Utilizing both SEER and Medicare sources provides the most comprehensive ascertainment of radiation therapy use.