Medicaid Expansion Linked to Improved Cancer Survival Rates

Strategic Insights -

New research highlights the positive impact of Medicaid expansion on cancer outcomes, showing significant improvements in survival rates among individuals with cancer, particularly in rural and high-poverty communities. The study, conducted by a team of researchers led by Christopher J. Johnson at the Cancer Data Registry of Idaho, analyzed data from 26 states that expanded Medicaid and 12 states that did not. The findings underscore the importance of Medicaid expansion in mitigating disparities in survival outcomes.

Key Takeaways:

  • Medicaid expansion was associated with improvements in 5-year cause-specific survival and overall survival (OS) among individuals with cancer, with significant differences observed in rural and high-poverty communities.
  • The study included a total of 1,423,983 cancer cases diagnosed between 2007 and 2008 and 2014 and 2015 among adults 18 to 59 years of age residing in 26 expansion and 12 non-expansion states.
  • Improvements in cause-specific survival were significantly greater in expansion states among individuals residing in rural (2.55 percentage point) and high-poverty communities (1.54 percentage point), non-Hispanic White individuals (0.37 percentage point), and those with pancreatic (2.60 percentage point), lung (1.32 percentage point), and colorectal cancers (1.31 percentage point).
  • The results were similar for OS, with significant improvements observed in expansion states.
  • The study's findings emphasize the importance of Medicaid expansion in mitigating disparities in survival outcomes, particularly among vulnerable populations.

Statistics:

  • 1,423,983: total number of cancer cases analyzed in the study
  • 26: number of states that expanded Medicaid
  • 12: number of states that did not expand Medicaid
  • 2.55: percentage point improvement in cause-specific survival in rural communities
  • 1.54: percentage point improvement in cause-specific survival in high-poverty communities
  • 0.37: percentage point improvement in cause-specific survival among non-Hispanic White individuals
  • 2.60: percentage point improvement in cause-specific survival among individuals with pancreatic cancer
  • 1.32: percentage point improvement in cause-specific survival among individuals with lung cancer
  • 1.31: percentage point improvement in cause-specific survival among individuals with colorectal cancer

Sources:

  • Association between Medicaid Expansion and 5-Year Survival among Individuals Diagnosed with Cancer. Cancer Discovery, 2025.
  • Cancer Discovery: Amer Assoc Cancer Research, 615 Chestnut St, 17TH Floor, Philadelphia, PA 19106-4404, USA (American Association for Cancer Research - www.aacr.com; Cancer Discovery - cancerdiscovery.aacrjournals.org/)
  • Christopher J. Johnson, Cancer Data Registry of Idaho, Boise, Idaho
  • Elizabeth J. Schafer, Fabio Y. Moraes, Xuesong Han, Jingxuan Zhao, and Ahmedin Jemal, additional authors on the research.