Category Archives: Lung Cancer

Asbestos-related Pleural Plaques and Lung Cancer: Discussion

The cohort design is more desirable than the case-control design because it provides a direct estimate of incidence rates, and therefore of relative risk, while the case-control design yields only an approximation of the relative risk provided certain assumptions are … Continue reading

Asbestos-related Pleural Plaques and Lung Cancer: Autopsy Studies

There are three investigations in which an association between pleural plaques and lung cancer was sought at autopsy (Table 7). The percentage of deaths in which autopsy was done was provided in only one report; it was only 25 percent. … Continue reading

Asbestos-related Pleural Plaques and Lung Cancer: Case-Control Studies

Four reports of case-control studies are summarized in Tables 4 through 6. All appeared in 1979 or 1980. An article by Harber et al has been excluded because both case patients and control subjects were exposed to asbestos and most … Continue reading

Asbestos-related Pleural Plaques and Lung Cancer: Cohort Studies

Edge found 19 deaths from lung cancer in 429 Barrow men with plaques and only 4 in 429 Carlisle controls. He recognized that 198 men with plaques were found in hospital or clinic sources and that this may have biased … Continue reading

Asbestos-related Pleural Plaques and Lung Cancer: Results

The studies in this review are examined in order of decreasing design value: cohort, case-control, and autopsy reports. A proportional mortality ratio study by Navratil et al was excluded because this type of investigation does not include data on populations … Continue reading

Asbestos-related Pleural Plaques and Lung Cancer: Material and Methods

Epidemiologic studies over the past three decades have established that workers exposed to asbestos in most circumstances are at increased risk of developing lung cancer. Recent literature reveals disagreement about the concept that the increased risk is limited to those … Continue reading