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Related Experiment Videos

Estimating gallstone incidence from prevalence data.

A B Lowenfels1, J P Velema

  • 1Dept. of Surgery, New York Medical College, Valhalla 10595.

Scandinavian Journal of Gastroenterology
|November 1, 1992
PubMed
Summary

Gallstone incidence increases with age, affecting women more than men. This study estimates yearly gallstone incidence rates across different age groups and populations, revealing significant age-related and sex-specific patterns.

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Area of Science:

  • Epidemiology
  • Gastroenterology
  • Public Health

Background:

  • Gallstone incidence data is often unavailable, hindering epidemiological studies.
  • Prevalence data has been used to estimate incidence rates in prior research.

Purpose of the Study:

  • To estimate age-specific incidence rates of gallstones.
  • To analyze the relationship between age, sex, and gallstone incidence.
  • To compare gallstone incidence across different populations.

Main Methods:

  • Utilized a previously described epidemiologic method.
  • Estimated incidence rates from published gallstone prevalence data in seven populations.
  • Calculated age-specific incidence rates and rate-ratios.

Main Results:

  • Yearly incidence rates varied from 1 in 1000 (younger men) to 19 in 1000 (older women).
  • Incidence of gallstones increased with age across all populations studied.
  • Female incidence rates consistently exceeded male rates (mean female to male rate-ratio = 1.85).

Conclusions:

  • Gallstone incidence demonstrates a clear age-dependent trend.
  • Women experience higher gallstone incidence rates than men.
  • The applied method provides reliable incidence estimates comparable to direct survey data.

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