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Factors that affect surgical rates in Iowa
S M McGuire1, K T Phillips, J N Weinstein
1Faculty of Medicine, Harvard University, Cambridge, Massachussetts.
Spine
|September 15, 1994
Summary
Surgical rates for low back pain treatment are higher for females, older patients, and those treated in smaller hospitals with lower occupancy and fewer staff. These findings aid physician groups in understanding surgical variation.
Area of Science:
- Health Services Research
- Epidemiology
- Medical Economics
Background:
- Hospitalization rates for low back surgery rose over 20% from 1978-1985 in the U.S.
- Increased rates prompted studies on the medical effectiveness of low back treatments.
- Variation in surgical rates necessitates understanding contributing factors.
Purpose of the Study:
- To identify factors associated with low back pain surgical treatment likelihood.
- To inform medical education and interventions aimed at reducing surgical rate variation.
- To analyze patient and hospital characteristics influencing surgical decisions.
Main Methods:
- Analysis of insurance claims data from Blue Cross/Blue Shield (BCBS) subscribers in Iowa.
- Utilized a logistic regression model to determine factors associated with low back surgery.
- Dependent variable: hospitalization for a surgical procedure on a low back pain patient.
Main Results:
- Female BCBS Iowa subscribers showed increased likelihood of low back surgery.
- Patients older than 44 years were more likely to undergo low back surgery.
- Surgery likelihood increased in hospitals with <62% occupancy, <774 staff, <267 beds, or no residency programs.
Conclusions:
- Patient demographics (age, gender) and hospital characteristics (size, occupancy, staff, residency programs) significantly influence low back surgery rates.
- Findings provide insights for interventions aimed at standardizing surgical care.
- Understanding these factors is crucial for optimizing treatment pathways for low back pain.