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If you are interested in a journal that has changed titles, split into
multiple titles, or merged with another title, you may be to calculate
a unified impact factor if the data are available. This can provide
continuity for your journal evaluation until the new title is established.
To unify an impact factor for a journal affected by a title change:
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Print out the template at the bottom of this Help page.
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From the Journal Title Changes page,
find the title of the journal and its old/new title.
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Access the Journal page for each title.
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Scroll down the page to find the Impact Factor data.
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Note the numbers for cites to recent articles, the number of recent
articles, and the impact factor. Fill in the blanks in the template
below.
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Total the figures in columns A and B to unify the cites to recent
articles and the number of recent articles.
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Divide the unified sum of column A by the unified sum of column B
to to find the unified impact factor (column C).
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