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KMID : 0387320090190030125
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Korean Journal of Health Policy and Administration
2009 Volume.19 No. 3 p.125 ~ p.141
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Difference in Outpatient Medical Expenditure and Physician Practice Patterns between Medicaid and Health Insurance Patients
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Joo Jung-Mi
Kwon Soon-Man
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Abstract
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The purpose of this study was to examine the role of provider practice patterns in the difference in health expenditure between the two types of patients: Health Insurance and Medical Aid type 1. The study used the outpatient claim data for all Medicaid and health insurance patients of hypertension who received medical services from 8,454 primary care physicians during the first half of 2006. The data were stratified by patient’s gender and age for the two groups of patients who received care from the same physician. The dependent variables were the differences in medical expenditure per case, patient days per case and medical expenditure per patient day between Medicaid patients and health insurance patients. Empirical results showed that physician characteristics, such as physicians under age 50, greater proportion of pediatric Medicaid patients, lower proportion of new Medicaid patients and the greater number of comorbidity of Medicaid patients are associated with the greater difference between the two types of patients (i.e., greater expenditure of Medicaid patients relative to health insurance patients). This study shows that factors associated with provider practice patterns need to be taken into account in Medicaid policy.
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KEYWORD
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Medicaid, health insurance, medical expenditure, provider characteristics
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