US avoidable mortality increased in all 50 states from 2009-2019 while declining in most high-income countries, with health spending structurally decoupled from outcomes within the US but not in peer nations

This study provides definitive evidence of a structural divergence in health system performance. From 2009-2019, avoidable mortality increased by a median 29.0 per 100,000 across US states (total average increase 32.5), while EU countries decreased by 25.2 and OECD countries by 22.8. The directional divergence is total: ALL US states worsened while most comparator countries improved. The state-level range widened dramatically from 251.1-280.4 in 2009 to 282.8-329.5 in 2019, with West Virginia worst at +99.6 increase and New York slightly improved at -4.9.

The critical finding is the spending-mortality relationship breakdown. In comparator countries, health spending shows a strong negative correlation with avoidable mortality (r = -0.7), meaning more spending associates with better outcomes. Across US states, this correlation is -0.12 and statistically non-significant. The authors state: 'While other countries appear to make gains in health with increases in health care spending, such an association does not exist across US states.' This is not a marginal difference but a structural dissociation—US healthcare spending literally does not move the avoidable mortality needle at the state level, while it does in every comparable country.

The increase was driven primarily by preventable mortality (24.3 per 100,000) versus treatable mortality (7.5 per 100,000)—a 3:1 ratio indicating that public health and prevention failures dominate over clinical care failures. External causes dominated, with drug-related deaths contributing 71.1% of the increase in preventable avoidable deaths from external causes. This confirms that the US health crisis operates through behavioral and social determinant pathways that the current clinical care architecture cannot address, even with higher spending.