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A complete pic-ture of impact for individual researchers and journals requires using multiple measures and does not fully capture all aspects of influence. There are only a few players in the scholarly publishing world that collect data on article citations: Clarivate Analytics, Elsevier, and Google Scholar (Table 1).
The journal impact factor: A brief history, critique, and discussion of adverse effects. Springer handbook of science and technology indicators. Springer; 2019. p. 3-24.
9 wrz 2009 · The impact factor is a ratio of journal citations to the number of substantive, scholarly articles published by that journal, but not the mathematical average of the citations to all of the journal's content.
QJM publishes peer-reviewed articles on internal medicine, which promote medical science and practice. The journal accepts original papers, editorials, reviews, commentary papers to air controversial issues, and correspondence. Find out more.
The journal impact factor, which is often recognized as a symbol of scientific prestige and relevance, can be, however, greatly influenced by the type of medical article (review vs original work), clinical specialty, and research.
In 2020, The BMJ’s impact factor rose to 39.89 (up 9.577). Its Citescore is now 6.9. Moreover, 80% of all our journals indexed in Scopus16 also increased their Citescore, and 34 of the 38 titles that have a journal impact factor received an increase. medRxiv: making preprints mainstream.
The Journal Impact Factor is defined as all citations to the journal in the current JCR year to items published in the previous two years, divided by the total number of scholarly items...
