|Country||United Kingdom - SIR Ranking of United Kingdom||
|Subject Area and Category||Medicine|
|Publisher||BMJ Publishing Group|
|Scope||BMJ Open is a medical journal. We consider papers addressing research questions in clinical medicine, public health and epidemiology. We also welcome studies in health services research, health economics, surgery, qualitative research, research methods, medical education, medical publishing and any other field that directly addresses patient outcomes or the practice and delivery of healthcare. Our focus is on research that is relevant to patients and clinicians. We do not publish studies conducted in animals, laboratory studies not linked to patient outcomes, papers reporting solely physiological or biomechanical results from healthy participants, anatomy, cell biology or non-clinical psychology. All research study types are considered, from study protocols through phase I trials to meta-analyses. This includes specialist studies and studies reporting negative results.|
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The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.
The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.
This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.
|Cites per document||Year||Value|
|Cites / Doc. (4 years)||2011||0.000|
|Cites / Doc. (4 years)||2012||1.889|
|Cites / Doc. (4 years)||2013||2.499|
|Cites / Doc. (4 years)||2014||2.891|
|Cites / Doc. (4 years)||2015||3.154|
|Cites / Doc. (4 years)||2016||3.035|
|Cites / Doc. (4 years)||2017||2.972|
|Cites / Doc. (4 years)||2018||2.825|
|Cites / Doc. (3 years)||2011||0.000|
|Cites / Doc. (3 years)||2012||1.889|
|Cites / Doc. (3 years)||2013||2.499|
|Cites / Doc. (3 years)||2014||2.891|
|Cites / Doc. (3 years)||2015||3.150|
|Cites / Doc. (3 years)||2016||2.935|
|Cites / Doc. (3 years)||2017||2.824|
|Cites / Doc. (3 years)||2018||2.703|
|Cites / Doc. (2 years)||2011||0.000|
|Cites / Doc. (2 years)||2012||1.889|
|Cites / Doc. (2 years)||2013||2.499|
|Cites / Doc. (2 years)||2014||2.844|
|Cites / Doc. (2 years)||2015||3.022|
|Cites / Doc. (2 years)||2016||2.625|
|Cites / Doc. (2 years)||2017||2.631|
|Cites / Doc. (2 years)||2018||2.418|
Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.
Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.
|External Cites per document||2011||0|
|External Cites per document||2012||1.759|
|External Cites per document||2013||2.404|
|External Cites per document||2014||2.790|
|External Cites per document||2015||3.035|
|External Cites per document||2016||2.799|
|External Cites per document||2017||2.654|
|External Cites per document||2018||2.584|
|Cites per document||2011||0.000|
|Cites per document||2012||1.889|
|Cites per document||2013||2.499|
|Cites per document||2014||2.891|
|Cites per document||2015||3.150|
|Cites per document||2016||2.935|
|Cites per document||2017||2.824|
|Cites per document||2018||2.703|
International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.
Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.
Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.