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American Journal of Epidemiology Vol. 117, No. 5: 575-589
Copyright © 1983 by The Johns Hopkins University School of Hygiene and Public Health


research-article

GROUPING OCCUPATIONS ACCORDING TO CARCINOGENIC POTENTIAL: OCCUPATION CLUSTERS FROM AN EXPOSURE LINKAGE SYSTEM

CHUNG-CHENG HSIEH1, ALEXANDER M. WALKER1,2 and SHELIA K. HOAR2

1Department of Epidemiology, Harvard School of Public Health 677 Huntington Ave., Boston, MA 02115 (address for reprint requests).
2Division of Biostatistics and Epidemiology, Sidney Farber Cancer Institute Boston, MA
3Environmental Epidemiology Branch, National Cancer Institute NIH, Bethesda, MD

An occupational clustering scheme has been developed from an occupation and exposure linkage system. In this scheme, occupational titles are grouped together hierarchically according to the numbers and degrees of their shared exposures. The use of the clusters obtained from this hierarchy is demonstrated in the analysis of the data from a case-control study of bladder cancer.

carcinogenesis; clustering; environmental exposure; occupational diseases


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