impact factor

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impact factor

mathematical expression of frequency with which a given medical journal's original articles are cited in other medical journals.

im·pact fac·tor

(im'pakt fak'tŏr)
Mathematic expression of frequency with which a particular medical journal's original articles are cited in other medical journals.
References in periodicals archive ?
Clicking on a category displays its historical metrics from 1997, including number of journals, articles, total cites, median and aggregate impact factor, and three metrics related to immediacy and half-life.
A related citation statistic is the aggregate impact factor, which is the average citation rate of papers in each discipline.
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