Industrial Epideminology

Our plain-English summary of Industrial Epideminology, by J. Kilian, G. Barna-Lloyd (1979).

The study

• Authors: J. Kilian, G. Barna-Lloyd
• Published: Federation Proceedings, Volume 38 No9. April 1979
• Type of article: Journal article
• Our copy: from Johns-Manville's own medical library. The article is still under copyright, so we describe it here rather than post it.

In plain English

This article was not a study of workers. It was an overview of methods in industrial epidemiology, the study of disease in groups of employees, and it reported no new data. The authors described sources of information for such studies: personnel, medical, insurance, plant and industrial hygiene records, and programs to trace former employees. They wrote that comparing workers with general-population statistics may mislead. Industrial populations tend to be younger and healthier and to include more males, so such comparisons can underestimate or overestimate risk. They called missing or poor data linking industrial hygiene measurements to individual work histories the weakest point in most record systems. Asbestos appeared only as an example. The authors wrote that a strong association can be assumed only when a rare disease, such as mesothelioma, occurs more often in an occupational group, as with asbestos workers. Citing other work, they wrote that male asbestos workers of past years were at increased lung cancer risk only if they smoked cigarettes. The authors concluded that cooperative, interdisciplinary work is urgently needed.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: Methodological overview or commentary on industrial epidemiology, from a symposium; no original study data
• Main results:
  • The authors wrote that industrial populations tend to be younger and healthier and to contain more males than the general population, so comparisons with general-population statistics may be misleading and can lead to under- or overestimation of risk
  • The authors described the absence or poor quality of data relating industrial hygiene measurements to individual employees' work histories as the weakest point in most record systems and in many epidemiologic studies
  • As an example, the authors wrote that a strong association can be assumed only when a disease is rare, such as mesothelioma in the general population, and is found more often in a particular occupational group, as was the case with asbestos workers
  • Citing other published work (not this article's data), the authors wrote that the male asbestos worker of past years is at increased risk of lung cancer, but only if a cigarette smoker
  • The authors wrote that the search for former employees who cannot be located through the usual channels must be as thorough for the comparison group as for the study group
• The authors' conclusion: The authors concluded that physicians trained in both occupational medicine and industrial epidemiology are rare, and that there is an urgent need for cooperative, interdisciplinary work involving many specialists

Topics

Medical terms in this study, explained in our Lexicon: Epidemiology, Industrial Hygiene, Mesothelioma, Lung Cancer.

Browse return to medical research.