====== Impact ======

Impact factor: The impact factor (IF) or journal impact factor (JIF) of an [[academic journal]] is a scientometric index calculated by Clarivate that reflects the yearly average number of citations of articles published in the last two years in a given journal. It is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factor values are often deemed to be more important, or carry more intrinsic prestige in their respective fields, than those with lower values.
----


Impact evaluation, a way of evaluating changes from an intervention or development program.

Head impact
----
[[International Mission for Prognosis and Analysis of Clinical Trial in TBI]].