Record Display for the EPA National Library Catalog

RECORD NUMBER: 31 OF 132

OLS Field Name OLS Field Data
Main Title Compartment Model Approaches for Estimating the Parameters of a Chronic Disease Process under Changing Risk Factor Exposures.
Author Manton, K. G. ; Stallard, E. ; Creason, J. P. ; Riggan, W. B. ; Woodbury, M. A. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;Duke Univ., Durham, NC.
Year Published 1986
Report Number EPA/600/J-86/162;
Stock Number PB87-114591
Additional Subjects Models ; Exposures ; Estimates ; Reprints ; Risk factors ; Chronic diseases
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-114591 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 18p
Abstract
Compartment model approaches have been proposed for the analysis of the age incidence of specific types of cancer. These models represented the age increase in incidence as the result of a compound hazard function where individual level risks were described by the Weibull hazard function and where the population level hazard rate is a continuous mixture of the Weibull hazards. These formulations assumed that the mixing function, which described differences in risk due to different exposure histories, was constant after the age at which the model was first applied. In the paper the authors show how the mixing distribution can be allowed to change with time reflecting changing exposures. The model is fitted to U.S. lung cancer mortality data where for recent male cohorts there appears to be changing patterns of exposure possibly related to recent declines in male smoking. The implications for future lung cancer mortality trends in the U.S. are discussed.