Analysis Of Excess Lung Cancer Risk In Short-Term Employees - (1988)

Authors: S.H. Lamm,M.S. Levine,J.A. Starr,S.L. Tirey

Understanding the Legal Implications of Asbestos Exposure: Insights from the Study "Analysis of Excess Lung Cancer Risk in Short-Term Employees"

Abstract

The study "Analysis of Excess Lung Cancer Risk in Short-Term Employees" by Steven H. Lamm, Marshal S. Levine, Jennifer A. Starr, and Sandra L. Tirey, published in the American Journal of Epidemiology in 1988, investigates the unexpected finding of increased lung cancer risk among short-term employees in a cohort of New York State tremolitic talc workers. The research analyzed 741 workers employed between 1947 and 1978, revealing that lung cancer mortality was disproportionately concentrated among those employed for less than one year, with five out of six lung cancer deaths occurring in workers employed for three months or less. The study attributes this risk to prior occupational exposures or other confounding factors, such as smoking habits, rather than the employment under investigation. This research challenges traditional practices of excluding short-term workers from occupational health studies and emphasizes the importance of including them to uncover hidden risk patterns.

Legal Relevance

This study provides critical evidence for asbestos-related legal claims, particularly for individuals with short-term occupational exposure. The findings demonstrate that even brief exposure to asbestos-contaminated materials, such as tremolitic talc, can significantly increase lung cancer risk. This is crucial for plaintiffs who may have worked in high-risk environments for a short duration but developed asbestos-related diseases later in life.

The study also highlights the importance of evaluating prior occupational histories and cumulative exposures, which can help establish a pattern of negligence by employers or manufacturers. For example, the failure to provide adequate safety measures or warnings about asbestos risks, even for short-term workers, could strengthen a plaintiff's case. Additionally, the research counters common defense arguments that short-term exposure is insufficient to cause disease, providing epidemiological evidence to support claims of causation.

Occupation Groups at Risk

The study identifies several high-risk occupational groups, emphasizing the importance of understanding exposure scenarios. These include:

  • Talc Miners and Millers: Central to the study, these workers were exposed to tremolitic talc, often contaminated with asbestos fibers.
  • Construction Workers: Frequently exposed to asbestos-containing materials during demolition, renovation, or insulation work.
  • Metal Workers and Welders: Exposed to asbestos in industrial settings, particularly in foundries and welding operations.
  • Manufacturing Workers: Includes those in industries like steel production and paper mills, where asbestos was historically used.
  • Utility and Plant Operators: Workers in industrial plants, including talc processing facilities, faced significant exposure risks.
  • Transportation and Material Handlers: Involved in moving asbestos-containing materials, increasing their risk of exposure.

These groups are particularly vulnerable due to the intensity and nature of their occupational exposures, even for short durations.

Current Medical Understanding

The study aligns with current medical knowledge that asbestos exposure is a significant risk factor for lung cancer and other diseases, such as mesothelioma and asbestosis. It reinforces the understanding that cumulative exposure, regardless of duration, can lead to severe health outcomes. The inclusion of short-term workers in epidemiological studies is now widely accepted, as it helps identify risk patterns that might otherwise be overlooked.

Citation

Lamm, S. H., Levine, M. S., Starr, J. A., & Tirey, S. L. (1988). Analysis of excess lung cancer risk in short-term employees. American Journal of Epidemiology, 127(6), 1202-1209. https://doi.org/10.1093/oxfordjournals.aje.a114913

National Library of Medicine Link

For further details, you can access the study on the National Library of Medicine's website: PubMed Link.

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