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Related Experiment Videos

Mortality among agricultural extension agents.

M C Alavanja1, A Blair, S Merkle

  • 1Division of Cancer Etiology, National Cancer Institute, Bethesda, MD.

American Journal of Industrial Medicine
|January 1, 1988
PubMed
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Agricultural extension agents showed increased leukemia risks linked to job duration. Similar cancer patterns suggest agricultural factors may influence these occupational health outcomes.

Area of Science:

  • Occupational Health
  • Epidemiology
  • Environmental Health

Background:

  • Agricultural extension agents (CES) work closely with farming communities.
  • Previous studies suggest farmers face elevated cancer risks.
  • Understanding cancer risks in extension agents may reveal shared environmental exposures.

Purpose of the Study:

  • To evaluate cancer mortality among U.S. Department of Agriculture agricultural extension agents.
  • To identify specific cancers potentially elevated in this occupational group.
  • To explore associations between employment duration and cancer risk.

Main Methods:

  • A proportionate-mortality analysis compared agent deaths to the general U.S. white male population.
  • Case-control studies investigated cancers with elevated proportionate-mortality ratios.

Related Experiment Videos

  • Analysis examined cancer trends in relation to years of employment.

    • Main Results:

    • Leukemia showed a statistically significant positive trend with increased duration of employment.
    • Non-Hodgkin's lymphoma, multiple myeloma, and brain cancer showed non-significant trends.
    • Hodgkin's disease and cancers of the colon, prostate, and kidney did not show trends with employment duration.

    Conclusions:

    • Leukemia risk increases with longer employment as an agricultural extension agent.
    • Observed cancer patterns resemble those in farmers, suggesting shared agricultural exposures.
    • Further research into agricultural factors is warranted to understand cancer origins in this group.