Some articles on fraction, etiologic fraction:
Attributable Risk - Diversity of Interpretation
... 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 ...
... 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 ...
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—Camille Paglia (b. 1947)
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