Figure 1. Correlation of State-Specific Incidence Rates of Triple-Negative Breast Cancer Between Black and White Women in the US.

Spearman ρ was calculated to test correlations in state-specific rates between populations in 37 states and Washington, DC. Race and ethnicity in the US Cancer Statistics Public Use Research Database⁴ was based on information abstracted from medical records that was either self-reported by patients or data inferred from health care practitioners.