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BMJ Open is a peer-reviewed open access medical journal that is dedicated to publishing medical research from all disciplines and therapeutic areas. [1] It is published by BMJ and considers all research study types, from protocols through phase I trials to meta-analyses, including small, specialist studies, and negative studies.
However, The BMJ in 2013 reported that it had become a signatory to the San Francisco Declaration on Research Assessment (commonly known as the Dora Agreement), which deprecates the inappropriate use of journal impact factors and urges journal publishers to "greatly reduce the emphasis on the journal impact factor as a promotional tool, ideally ...
This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services. True open-access journals can be split into two categories:
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]
Impact factor. 5.1 (2023) ... It was established in 1939 as the British Heart Journal and is published by the BMJ Group. [1] ... Open Heart, was established in ...
The journal is abstracted and indexed in the Emerging Sources Citation Index, [9] Scopus, and the Directory of Open Access Journals. [10] According to the Journal Citation Reports, the journal has a 2023 impact factor of 5.3—ranking it in 28th place out of 276 journals in the category "Psychiatry". [11]
Journal ranking is widely used in academic circles in the evaluation of an academic journal's impact and quality. Journal rankings are intended to reflect the place of a journal within its field, the relative difficulty of being published in that journal, and the prestige associated with it.
Impact factor. 4.9 (2023) Standard abbreviations ... It is published by the BMJ Group. History. The journal was established in 1947 by John Ryle, ...