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Case mix complexity differences between teaching and nonteaching hospitals.

R P Ament, E J Kobrinski, W R Wood

    Journal of Medical Education
    |November 1, 1981
    PubMed
    Summary
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    Teaching hospitals have higher patient case complexity than nonteaching hospitals, as measured by the Resource Need Index (RNI). This complexity contributes to higher costs in teaching hospitals, even before other factors are considered.

    Area of Science:

    • Health Services Research
    • Hospital Administration
    • Healthcare Economics

    Background:

    • Teaching hospitals often face higher operational costs compared to nonteaching facilities.
    • Understanding variations in patient case mix complexity is crucial for accurate cost allocation and reimbursement.

    Purpose of the Study:

    • To quantify and compare the case mix complexity between teaching and nonteaching hospitals.
    • To determine if case mix complexity alone can explain cost differences.

    Main Methods:

    • A sample of 200 short-term general hospitals was analyzed.
    • Case complexity was measured using the Resource Need Index (RNI).
    • The RNI was calculated using a cross-classification of 3,490 case types weighted by patient charges.

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    Main Results:

    • Median RNI values were moderately higher in teaching hospitals overall and across most clinical services.
    • Teaching hospitals had a higher frequency of resource-intensive case types.
    • The frequency of least resource-intensive case types was similar between teaching and nonteaching hospitals.

    Conclusions:

    • Case mix complexity is a significant factor contributing to higher per-patient costs in teaching hospitals.
    • Even when considering only case mix, teaching hospitals are expected to incur somewhat greater expenses.