Geographical Distribution Variation Research Articles

An analysis of lung cancer on a microgeographical level

Mortality from cancers of the lung-bronchus-trachea show large variations in geographical distribution within the United States. Jefferson County, Kentucky shows significantly high mortality rates for this type of cancer. The focus of this study was to divide the country into small homogeneious areas to determine if there are geographical variations of mortality within the county as a whole. The results indicate that two areas of the county consistently show excess mortality for this particular type of cancer. Several possible explanations of the variations within the county are explored.

GLOBAL DISTRIBUTION OF CARCINOGENIC POLLUTANTS IN WATER

Some topics discussed are as follows: sources of pollution or contamination; occurrence and frequency of distribution; geographic variation in distribution; and biomedical significance of carcinogenic biorefractories. (HLW)