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Variations in health services utilization by primary care patients
Victoria Bolaños-Carmona1, Ricardo Ocaña-Riola, Alexandra Prados-Torres
1Departamento de Estumatologia, Facultad de Odontologia, Universidad de Granada, Campus Univeristario de Cartuja, 18080 Granada, Spain.
Health Services Management Research
|May 25, 2002
Summary
Ambulatory Care Groups (ACGs) and physician factors significantly influence primary care use, including visits and referrals. Patient-specific factors, however, account for the largest portion of unexplained health service utilization variability.
Area of Science:
- Health Services Research
- Primary Care Medicine
- Health Economics
Background:
- Understanding factors influencing health service utilization is crucial for efficient primary care management.
- Variability in patient and physician characteristics can lead to differential healthcare resource consumption.
- Previous research has explored patient case-mix but often overlooks the impact of physician attributes.
Purpose of the Study:
- To analyze the explanatory power of Ambulatory Care Groups (ACGs) and physician characteristics on health service use in Spanish primary care.
- To quantify the contribution of patient-level factors versus physician-level factors in explaining healthcare utilization.
Main Methods:
- Retrospective analysis of data from 52,152 primary care patients and 38 physicians in Spain (1996-1997).
- Response variables included: number of patient visits, diagnostic tests ordered, and specialist referrals.
- Statistical analysis to assess the impact of ACGs and physician attributes (age, position) on service utilization.
Main Results:
- Ambulatory Care Groups (ACGs) were significant predictors of health service utilization.
- Physician age and professional position were identified as key factors influencing healthcare resource use.
- Patient characteristics were found to be the primary driver of unexplained variability in service utilization.
Conclusions:
- Both patient case-mix (via ACGs) and physician attributes are important determinants of primary care service utilization.
- Healthcare policy should consider both patient factors and physician characteristics for optimizing resource allocation.
- Further research is needed to elucidate the specific patient characteristics contributing to the unexplained utilization variance.