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Published on: January 12, 2018

How representative are volunteer physicians in collaborative research projects?

P E Hoogewerf, J D Allingham

    Canadian Family Physician Medecin De Famille Canadien
    |January 29, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Family physician research volunteers are more likely from small towns. This difference may bias study results, highlighting the need for further investigation into volunteer characteristics for reliable family medicine research.

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    Area of Science:

    • Family Medicine
    • Medical Research Methodology

    Background:

    • Multicentre collaborative studies are common in family medicine due to difficulties in recruiting large physician samples.
    • Ensuring research volunteers represent the broader family physician population is crucial to prevent biased study outcomes.

    Purpose of the Study:

    • To investigate potential differences between family physician research volunteers and non-volunteers.
    • To assess if volunteer characteristics could introduce bias in multicentre family medicine research.

    Main Methods:

    • A preliminary study comparing volunteers and non-volunteers across several variables.
    • Discriminant analysis was employed to determine predictability of group membership.

    Main Results:

    • The primary statistically significant difference identified was the place of practice: volunteers predominantly came from small towns.
    • Discriminant analysis achieved 62% accuracy in predicting physician group membership, indicating limited but present differentiation.

    Conclusions:

    • Volunteer family physicians show a statistically significant tendency to practice in small towns compared to non-volunteers.
    • Additional research is necessary to explore other variables that may differentiate volunteers and non-volunteers, ensuring broader applicability of family medicine research findings.