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Related Experiment Videos

Comparing period prevalences with application to drug utilization

B H McFarland1

  • 1Kaiser Permanente Center for Health Research, Portland, Oregon 97227-1098, USA.

Journal of Clinical Epidemiology
|April 1, 1996
PubMed
Summary

Comparing period prevalence from different data sources, like administrative databases and surveys, is challenging. Life table methodology offers a solution for accurate comparisons of health data over time.

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Area of Science:

  • Epidemiology
  • Health Services Research
  • Biostatistics

Background:

  • Period prevalence, including treated prevalence and drug utilization prevalence, is commonly measured using administrative data from sources like health maintenance organizations.
  • Comparing period prevalence data from administrative databases with national surveys or multiple administrative databases presents challenges, primarily due to the 'person-time at risk' issue.

Purpose of the Study:

  • To review the advantages and disadvantages of period prevalence compared to cumulative incidence.
  • To describe life table methodology for comparing period prevalence data from administrative databases with survey results.
  • To demonstrate the extension of life table methodology for comparing period prevalence across multiple administrative databases.

Main Methods:

Related Experiment Videos

  • Review of period prevalence and cumulative incidence concepts.
  • Description and application of life table methodology for comparing prevalence data.
  • Illustrative examples using hypnotic drug use and schizophrenia treatment data.

    • Main Results:

    • Life table methodology provides a robust approach to address the 'person-time at risk' problem when comparing period prevalence from diverse data sources.
    • The described technique facilitates accurate comparisons between administrative data and survey results.
    • The method is adaptable for comparing prevalence data across multiple administrative databases.

    Conclusions:

    • Life table methodology is a valuable tool for the accurate comparison of period prevalence data from administrative databases and surveys.
    • This statistical approach enhances the reliability of health services research by enabling valid comparisons across different data sources.
    • The methodology is applicable to various health conditions and drug utilization studies, such as those involving hypnotics and schizophrenia treatment.