Some articles on fraction, etiologic fraction:
... Greenland and Robins distinguished between excess fraction and etiologic fraction in 1988 ... Etiologic fraction is the proportion of the cases that the exposure had played a causal role in its development ... It is defined as where EF = Etiologic fraction Ne = Number of exposed individuals in a population that develop the disease Nn = Number of unexposed ...
Famous quotes containing the word fraction:
“The visual is sorely undervalued in modern scholarship. Art history has attained only a fraction of the conceptual sophistication of literary criticism.... Drunk with self-love, criticism has hugely overestimated the centrality of language to western culture. It has failed to see the electrifying sign language of images.”
—Camille Paglia (b. 1947)