Racial disparities in hospitalizations for ambulatory care-sensitive conditions

Area of Science:

• Health Services Research
• Health Disparities
• Quality of Care

Background:

• Variations in ambulatory care quality contribute to health disparities with substantial economic consequences.
• Understanding these disparities is crucial for improving healthcare outcomes and reducing costs.

Purpose of the Study:

• To identify hospitalization rate differences for elderly African Americans and white individuals for eight ambulatory care-sensitive conditions (ACSCs).
• To assess race's contribution to preventable hospitalization disparities, controlling for demographic, socioeconomic, and prevalence factors.
• To estimate the excess costs linked to these racial disparities in hospitalizations.

Main Methods:

• Utilized Agency for Healthcare Research and Quality (AHRQ) Prevention Quality Indicators (PQIs) with 2006 Medicare claims data for 569,896 Maryland beneficiaries.
• Developed eight ACSC hospitalization measures and analyzed them using Poisson regression, controlling for age, gender, income, and geographic factors.
• Estimated excess costs based on excess hospitalizations among African Americans and median cost per admission.

Main Results:

• African Americans exhibited significantly higher hospitalization rates than whites for five of eight studied ACSCs, even after controlling for covariates.
• Excess costs attributed to quality disparities ranged from $38,000 for urinary tract infections to $8 million for heart failure.
• Race emerged as a significant predictor for preventable hospitalizations in certain ACSCs.

Conclusions:

• Racial disparities in preventable hospitalizations for specific ACSCs incur significant excess costs for Medicare.
• Targeted improvements in ambulatory care for minority populations hold the potential to mitigate these disparities.
• Enhancing ambulatory care quality can lead to reduced hospitalizations and lower overall healthcare expenditures.