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A population based study of bariatric surgery in Illinois
Catherine S Valukas1, Joseph Sanchez1, Dominic Vitello1
1Northwestern Quality Improvement, Research and Education in Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Department of Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
Summary
Metabolic and bariatric surgery utilization in Illinois has increased, but disparities persist. Hispanic and low-income patients have lower surgery rates, indicating access barriers for these groups.
Area of Science:
- Health Services Research
- Surgical Outcomes
- Health Disparities
Background:
- Metabolic and bariatric surgery (MBS) utilization has grown significantly.
- Barriers to accessing MBS persist, particularly for certain demographic groups.
Purpose of the Study:
- To determine MBS utilization rates among qualifying adults in Illinois.
- To identify patient characteristics associated with undergoing MBS at low-volume hospitals (LVHs).
Main Methods:
- Analysis of Illinois hospital administrative data (2016-2022) and population estimates.
- Calculation of MBS rates per 100,000 qualifying residents.
- Logistic regression to identify factors associated with LVH utilization, defined as <50 annual procedures.
Main Results:
- Average annual MBS rate was 702 per 100,000 qualifying adults.
- Non-Hispanic Black patients had the highest rates (890/100,000), while Hispanic patients had the lowest (396/100,000).
- Lower median household income was linked to higher utilization of LVHs.
Conclusions:
- MBS procedures nearly doubled in Illinois during the study period, with notable increases for non-Hispanic Black and Medicaid patients.
- Significant disparities remain, with Hispanic and low-income populations experiencing lower MBS rates than the state average.
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