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The New England Journal of Medicine (NEJM) is a weekly medical journal published by the Massachusetts Medical Society. Founded in 1812, the journal is among the most prestigious peer-reviewed medical journals. [1] Its 2023 impact factor was 96.2, ranking it 2nd out of 168 journals in the category "Medicine, General & Internal". [2]
The Massachusetts Medical Society owns and publishes The New England Journal of Medicine, the most widely read and cited medical journal in the world.The New England Journal of Medicine is also the oldest continuously published and circulating medical journal in the world and has an impact factor of 91.2, the highest among all the medical journals in the world.
The impact factor relates to a specific time period; it is possible to calculate it for any desired period. For example, the JCR also includes a five-year impact factor, which is calculated by dividing the number of citations to the journal in a given year by the number of articles published in that journal in the previous five years. [14] [15]
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
Journals that are recognized as general medical journals include The Lancet, the New England Journal of Medicine, [2] and the Annals of Internal Medicine. [7] In 2009, the three highest-ranked general medical journals by impact factor were JAMA, The Lancet, and the New England Journal of Medicine. [8]
An article in the May issue of the New England Journal of Medicine called for wider U.S. use of medication-assisted therapies for addicts, commonly referred to as MATs. It was written by Dr. Nora Volkow, director of the U.S. National Institute on Drug Abuse — which helped research Suboxone before it earned FDA approval in 2002 — along with ...
According to the Journal Citation Reports, the journal has a 2023 impact factor of 98.4, ranking it first above The New England Journal of Medicine in the category "Medicine, General & Internal". [8] According to BMJ Open, The Lancet is more frequently cited in general newspapers around the world than The BMJ, NEJM and JAMA. [9]
In any given year, the CiteScore of a journal is the number of citations, received in that year and in previous three years, for documents published in the journal during the total period (four years), divided by the total number of published documents (articles, reviews, conference papers, book chapters, and data papers) in the journal during the same four-year period: [3]