Primary payer status affects mortality for major surgical operations.

Area of Science:

• Health Services Research
• Surgical Outcomes
• Healthcare Policy

Background:

• Medicaid and uninsured populations are central to healthcare reform discussions in the US.
• Understanding surgical outcomes based on primary payer status is crucial for addressing health disparities.

Purpose of the Study:

• To investigate the hypothesis that major surgical outcomes in the US are influenced by primary payer status.
• To compare mortality rates, length of stay, and total costs among different payer groups.

Main Methods:

• Analysis of 893,658 major surgical operations from the Nationwide Inpatient Sample (NIS) database (2003-2007).
• Stratification of patients by primary payer: Medicare, Medicaid, Private Insurance, and Uninsured.
• Application of multivariate regression models to assess outcomes, controlling for various patient and operational factors.

Main Results:

• Unadjusted mortality was significantly higher for Medicare, Medicaid, and Uninsured patients compared to those with Private Insurance.
• After risk adjustment, Medicaid and Uninsured payer status were independently associated with the highest risks of mortality.
• Medicaid patients experienced the longest length of stay and highest total costs, irrespective of operation or risk factors.

Conclusions:

• Medicaid and Uninsured payer status are linked to increased risk-adjusted mortality following major surgery.
• Medicaid patients incur greater adjusted lengths of stay and total healthcare costs.
• These findings underscore significant socioeconomic and health system-related disparities that require targeted interventions to improve surgical outcomes for vulnerable US patient populations.