Key clinical point: Medicaid insurance expansion improved early cancer diagnosis but did not affect time to treatment.

Major finding: Early-stage diagnoses were 0.8 percentage points higher in states that adopted expanded Medicaid coverage than in nonexpansion states (P = .001).

Study details: A retrospective study of 925,543 patients diagnosed with breast, colon, or non–small cell lung cancer from 2011 to 2016.

Disclosures: The study was funded by the National Cancer Institute and the Agency for Health Research and Quality. The authors had no relevant disclosures.