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Measuring disease occurrence.

K J Jager1, C Zoccali, R Kramar

  • 1ERA-EDTA Registry, Department of Medical Informatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. k.j.jager@amc.uva.nl

Kidney International
|June 21, 2007
PubMed
Summary
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This paper clarifies disease occurrence measures, distinguishing incidence (new cases) from prevalence (existing cases). Incidence rate is preferred for dynamic populations or long studies, while prevalence reflects disease burden for healthcare planning.

Area of Science:

  • Epidemiology
  • Public Health
  • Biostatistics

Background:

  • Accurate measurement of disease occurrence is crucial for public health.
  • Different metrics exist to quantify disease frequency in populations.
  • Understanding these measures informs disease prevention and healthcare management.

Purpose of the Study:

  • To elucidate the distinct measures of disease occurrence: incidence and prevalence.
  • To provide guidance on selecting appropriate incidence measures (risk vs. rate).
  • To illustrate the application of these measures using nephrology literature examples.

Main Methods:

  • Conceptual review of epidemiological measures of disease occurrence.
  • Discussion of the utility and application of incidence and prevalence.

Related Experiment Videos

  • Case examples from nephrology literature to demonstrate practical use.

    • Main Results:

    • Incidence quantifies new disease cases, valuable for etiology and risk factor assessment.
    • Prevalence measures existing cases, reflecting disease burden and informing healthcare planning.
    • Incidence rate is recommended for dynamic populations or studies with significant follow-up challenges.

    Conclusions:

    • Appropriate selection of disease occurrence measures is vital for accurate epidemiological analysis.
    • Incidence rate offers advantages in dynamic populations and long-term studies.
    • Prevalence data is essential for assessing disease impact and resource allocation in healthcare.