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# Medicaid expansion tracked lower mortality after kidney cancer, but not for everyone
- URL: https://www.coios.me/medicaid-expansion-tracked-lower-mortality-after-kidney/
- Published: 2026-09-24T08:52:23.000Z
- Updated: 2026-09-24T12:11:41.000Z
- Description: Among 284,967 US adults aged 40 to 64 diagnosed with renal cell carcinoma from 2006 to 2021, mortality was 7% lower in states that expanded Medicaid (HR 0.93), with five-year mortality down 6.3 points among Hispanic patients and unchanged among Black patients.
- Author: Daniel Ryan
- Tags: Healthcare today, Cancer, Health funding and inequalities, United States, #peer-reviewed, #confirms, #item, #source-2026-09

A difference-in-differences analysis of 284,967 adults aged 40 to 64 in the National Cancer Database compared states that expanded Medicaid under the Affordable Care Act with those that did not, before 2014 and after. Uninsured rates fell from 7.3% to 1.9% in expansion states against 8.2% to 4.7% elsewhere, and expansion carried a hazard ratio for overall mortality of 0.93 (95% CI 0.91-0.94). Five-year mortality fell 1.4 percentage points overall and 6.3 points among Hispanic patients, while among non-Hispanic Black patients it did not move at all.

*Why it is interesting: A change in who is insured moved cancer survival at working ages, and it moved it for some groups and not others.*

Source

[Journal of Surgical Research, 22 September 2026](https://doi.org/10.1016/j.jss.2026.08.036?ref=coios.me)

DOI

10.1016/j.jss.2026.08.036

Type

Peer-reviewed article

Design

Retrospective difference-in-differences cohort, National Cancer Database, 284,967 adults aged 40-64 with renal cell carcinoma, 2006-2021

Verdict

Confirms prior evidence

Driver

[Cancer](https://www.coios.me/d-cancer/)

Driver

[Health funding and inequalities](https://www.coios.me/d-health-inequality/)