BMJ Bibliometric Report

Introduction

This report provides a comprehensive analytics report of the publisher BMJ including basic bibliometric information, citation data, impact metrics, top journals, publication keywords, etc., over recent years. The Crossref database (up to the end of 2021) processed by ScienceGate has been used for this report as the source of data.

BMJ has published 960979 documents so far, receiving a total of 8296189 citations. These numbers are equal to 0.78% and 0.75% of the total documents and citations in the scientific community, respectively. BMJ has a score of 8.63 as a number of citations per document based on all recorded data. There are different types of documents published by BMJ. In this regard, Journal Article, Proceedings Article, and Dataset a with the total document number of 909554, 51424, and 1 have the largest share, respectively. These numbers are equal to 94.65%, 5.35%, and 0.00% of the total documents published in BMJ so far, respectively. BMJ has been an active publisher from 1840-2021.

Basic Bibliometric Information

This section provides the bibliometrics data of BMJ over the last 11 years, including the number of published documents, total citations, citations per document, and scaled number of citations per document by year. Share of BMJ documents and citations among all published scientific documents are also presented here. BMJ has the highest annual number of publications in 2019, with 34138 published documents. Most annual citations are also received in 2010, with 233194 citations. The highest citations per document’s scores, scaled by the number of years ahead, are associated with 2020, with scores of 1.10.

Document Types

There are different types of documents published by publishers. In this section, the yearly publication data of BMJ are presented by document type, including Journal Articles, Proceeding Articles, and Datasets.

The number of published documents by BMJ are 909554, 51424, and 1 for Journal Articles, Proceeding Articles, and Datasets, respectively. These numbers are equal to 0.99%, 0.73%, and 0.00% of the whole published Journal Articles, Proceeding Articles, and Datasets in the database so far, respectively.

The number of received citations by Journal Articles, Proceeding Articles, and Datasets of BMJ are 8294199, 1990, and 0, respectively. These numbers are equal to 0.79%, 0.01%, and 0.00% of the citations received by whole Journal Articles, Proceeding Articles, and Datasets of the database so far, respectively.

The h-index value for published Journal Articles, Proceeding Articles, and Datasets by BMJ are 534, 6, and 0, respectively. The corresponding values for the whole data of the database are 3201, 615, and 98, respectively.

The g-index value for published Journal Articles, Proceeding Articles, and Datasets by BMJ are 45, 3, and 0, respectively. The corresponding values for the whole data of the database are 129, 50, and 20, respectively.

The score of citations per document for published Journal Articles, Proceeding Articles, and Datasets by BMJ are 9.119, 0.039, and 0.000, respectively. The corresponding values for the whole data of the database are 11.521, 2.540, and 0.070, respectively.

The highest number of annually published Journal Articles, Proceeding Articles, and Datasets by BMJ are 30793, 13877, and 1, respectively. The corresponding year of maximum publication for Journal Articles, Proceeding Articles, and Datasets are 2013, 2019, and 2013, respectively.

The highest number of annual received citations by Journal Articles, Proceeding Articles, and Datasets published in BMJ are 233194, 665, and 0, respectively. The corresponding years of maximum received citations for Journal Articles, Proceeding Articles, and Datasets are 2010, 2018, and 2020, respectively.

The highest values of citations per number of document for Journal Articles, Proceeding Articles, and Datasets published in BMJ are 12.74, 0.07, and 0.00, respectively. The corresponding years of maximum values of citations per document for Journal Articles, Proceeding Articles, and Datasets are 2010, 2017, and 2013, respectively.

Impact Metrics

Various metrics and indicators are used to evaluate the impact and quality of publishers and journals. Here, h-index, g-index, and i-index are selected as impact evaluation metrics of the publisher BMJ.

H-index

H-index indicates the number of articles published by a journal/publisher, h, that have been cited at least h times. h5-index and h10-index are the h-index for papers of a publishers/journals published in the last 5 and 10 years, respectively. h-index, h10-index, and h5-index of the documents published by BMJ, are 534, 283, and 160, respectively. The corresponding values for the whole data of the database are 3269, 1489, and 795, respectively.

G-index

The g-index indicator is the first g papers of a publisher/journal (sorted by the highest to the lowest number of citations) that have cumulatively received at least g^2 citations. Again, g5-index and g10-index are the g-index for papers of a publishers/journals published in the last 5 and 10 years, respectively. G-index, g10-index, and g5-index of the documents published by BMJ are 45, 29, and 20, respectively. The corresponding values for the whole data of the database are 131, 80, and 55, respectively.

I-n index

I-n index shows the number of publications of a publisher/journal with at least n citations. Read another post here for more detailed information on different research impact metrics. It is to be noted that, i10-index, i25-index, i50-index, i100-index, i250-index, i500-index, i1000-index, i2500-index, i5000-index, and i10000-index of the documents published by BMJ, are 160570, 84205, 40033, 14382, 2657, 638, 162, 32, 11, and 4, respectively. The corresponding values for the whole data of the database are 21796896, 10617845, 4822066, 1785083, 390499, 114230, 31648, 5505, 1423, and 355, respectively.

Top Journals

This section provides the basic bibliometrics data of the BMJ top journals, including the number of published documents, total citations, and citations per document. Share of documents and citations of each journal among all published documents by BMJ is also presented here. In the following tag cloud chart, top journals are displayed based on the largest number of published documents.

The Top 5 journals of BMJ based on the number of published documents are BMJ, Annals of the Rheumatic Diseases, Archives of Disease in Childhood, Journal of Neurology Neurosurgery & Psychiatry, and BMJ Case Reports. The numbers of documents published so far by these top 5 journals are 438646, 43097, 32350, 27694, and 25438, respectively. These numbers are equal to 45.646%, 4.485%, 3.366%, 2.882%, and 2.647% of the total documents published by BMJ so far, respectively.

Concerning the number of received citations, the top 5 journals of BMJ are BMJ, Gut, Journal of Neurology Neurosurgery & Psychiatry, Annals of the Rheumatic Diseases, and Thorax. The total number of citations received so far by these top 5 journals are 438646, 24708, 27694, 43097, and 18500, respectively. These numbers are equal to 5.287%, 0.298%, 0.334%, 0.519%, and 0.223% of the total citations received by BMJ publications so far, respectively.

Regarding the number of citations received per document, the top 5 journals of BMJ are BMJ Quality & Safety, Gut, Heart, Quality in Health Care, and Journal of Medical Genetics. The numbers of citations received per published document so far by these top 5 journals are 33.532, 32.293, 28.931, 26.294, and 25.022, respectively.

Top Keywords

The Most used keywords are of particular importance for reviewing a publisher. This section provides detailed information about basic bibliometrics data of top used keywords in BMJ. The metrics used here are the number of documents, citations and citations per document. Share of documents and citations of each keyword among whole published documents is also presented here. In the following tag cloud chart, top keywords are displayed based on the largest number of published documents.

According to the number of published documents, the top 10 keywords of the publisher BMJ are rheumatoid arthritis, systematic review, cohort study, risk factors, cross sectional, public health, meta analysis, controlled trial, medical journal, and randomised controlled, respectively. The number of published documents in which the mentioned 10 keywords are used are, 14549, 7756, 7051, 5564, 5548, 5370, 4769, 4727, 4498, and 4471, respectively.

Based on the number of received citations, the top 10 keywords of the publisher BMJ are systematic review, meta analysis, rheumatoid arthritis, randomised controlled, controlled trial, cohort study, randomised controlled trial, risk factors, population based, and heart disease, respectively. The number of citations received by the documents in which the mentioned 10 keywords are used are, 7756, 4769, 14549, 4471, 4727, 7051, 3786, 5564, 3054, and 3732, respectively.

Concerning the score of received citations per document, the top 10 keywords of the publisher BMJ are meta analysis, crohn’s disease, crohn’s disease, double blind, randomised controlled, prospective study, controlled trial, randomised controlled trial, inflammatory bowel, and inflammatory bowel disease, respectively. The score of citations received per document in which the mentioned 10 keywords are used are, 45.750, 39.867, 39.717, 37.010, 36.667, 34.159, 33.517, 32.031, 31.918, and 31.551, respectively.