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Denominator definition by the utilization correction factor method.

F Mayo, D Marsland, M Wood

    Family Practice
    |September 1, 1986
    PubMed
    Summary
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    This study demonstrates that primary care populations in Virginia accurately represent the state's general population. This finding supports the use of primary care networks for clinical research, ensuring broader applicability of results.

    Area of Science:

    • Clinical research methodology
    • Population health studies

    Background:

    • Traditional clinical research often involves atypical patient populations, potentially limiting generalizability.
    • Primary care settings offer a more representative sample of the general population for clinical studies.

    Purpose of the Study:

    • To assess the demographic representativeness of a primary care patient network in Virginia compared to the state population.
    • To validate the utilization correction factor method for calculating research denominators in primary care.

    Main Methods:

    • A network of primary care populations in Virginia was analyzed.
    • The utilization correction factor method was employed to determine the study denominator.
    • Demographic data of the patient network were compared with the overall Virginia population demographics.

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    Main Results:

    • The demographic characteristics of patients within the primary care network closely mirrored those of the general Virginia population.
    • The findings indicate a high degree of representativeness, comparable to advanced sampling techniques.

    Conclusions:

    • Primary care networks can serve as valid and representative populations for clinical research in the United States.
    • The utilization correction factor method is effective for denominator calculation in primary care research settings.