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RECORD NUMBER: 4 OF 18

OLS Field Name OLS Field Data
Main Title Estimability and Estimation of Excess and Etiologic Fractions.
Author Robins, J. ; Greenland., S. ;
CORP Author Harvard School of Public Health, Boston, MA. ;California Univ., Los Angeles. School of Public Health.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/394;
Stock Number PB90-246000
Additional Subjects Epidemiology ; Etiology ; Statistical analysis ; Exposure ; Probability theory ; Formulas(Mathematics) ; Reprints ; Survival analysis
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-246000 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/03/1990
Collation 16p
Abstract
The paper describes conditions under which epidemiologic data can provide estimates of the excess fraction (proportionate increase in caseload due to an exposure) and the etiologic fraction (fraction of cases caused by exposure). The excess fraction can be estimated under essentially the same conditions often cited for general study validity. In contrast, estimation of the etiologic fraction will usually require very specific non-identifiable assumptions about exposure action and interactions, although one can derive simple lower and upper bounds for the fraction from survival comparisons. The etiologic fraction is equivalent to the probability of causation. (Copyright (c) 1989 by John Wiley & Sons, Ltd.)