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Related Experiment Videos

Sample survey methods as a quality assurance tool in a general practice immunisation audit

R Cullen

    The New Zealand Medical Journal
    |April 27, 1994
    PubMed
    Summary

    Sample surveys offer a practical quality assurance method for family practices, reducing the burden of full patient record audits. This approach provides reliable data efficiently, improving healthcare quality without disrupting daily routines.

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    Area of Science:

    • Family Medicine
    • Quality Assurance
    • Health Services Research

    Background:

    • Regular audits in busy family practices are often impractical due to large patient volumes.
    • Traditional census-based audits disrupt routine clinical workflows.
    • There is a need for efficient quality assurance methods in primary care.

    Purpose of the Study:

    • To demonstrate the integration of sample survey methodology into the quality assurance cycle.
    • To evaluate the feasibility and effectiveness of sample surveys in a family practice setting.
    • To offer an alternative to disruptive practice censuses for quality monitoring.

    Main Methods:

    • A simple random sample (with replacement) of 120 children (aged 6 weeks to 2 years) was drawn from 580 permanent records.

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  • The sample survey was conducted and repeated after 4 weeks to assess reliability.
  • Sample size was determined to achieve a predetermined level of precision.

    • Main Results:

    • Both surveys were completed within a single working day.
    • A low percentage (22.5%) of children under 2 were found to be overdue for immunizations, with minimal improvement after a catch-up campaign.
    • Seventy-two percent of the sampled children held a community services card.

    Conclusions:

    • Sample surveys provide a practical and efficient method for quality assurance in family practices.
    • This methodology yields useful estimates with known precision while minimizing disruption to office routines.
    • Sample surveys can effectively replace burdensome practice censuses for quality audits.