Bibliometric Coupling Analysis of COVID-19 Literature

A Bibliographic coupling analysis examines the reference lists of documents, to identify where articles share a common reference. The degree of overlap between article’s reference list represents the strength of the connection between them. Greater overlap means two documents share a large proportion of references, and thus a probability that the content are on related topics. Conversely, little overlap indicates the documents are based on distinct pieces of literature, with few commonalities.

For more information about what a bibliometric coupling analysis is, please see the about page.

 

Applications for the bibliometric coupling results:

  • Organizes published articles by topics, enables the reader to identify articles within an area of interest.
  • It is a complementary way to identify related research. The results are not based on search terms, so identifying related articles through this method opens the possibility to make valuable and novel connections between research articles.

To access the interactive map, you need to open the graph in VosViewer, which allows you to search the map, see article information on each node in the graph diagram, and by clicking on the node, open the article in a browser window. To open the map in VOSviewer, please download the free program: VOSviewer here, and open the files.

Growth in number of documents by week:

Date Number of documents in Scopus Number of documents in analysis
16th March 296 197
23rd March 411 280
30th March 828 502
6th April 1275 784
13th April 1660 1097
20th April 2281 1546
27th April 4578 2585
4th May 6135 3441
11th May 7328 4207
18th May 8209 5021
25th May 11380 6213
01st June 13226 7490
08th June 15178 8810
15th June 17204 10256
22nd June 18935 11329
29th June 21237 12373
06th July 23120 13614
13th July 25916 15409
20th July 27939 16935
3rd August 32604 20329

 

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as of August 3rd, 2020

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as it looks like at August 3rd, 2020

Corpus: 32 604 documents, downloaded from Scopus. 20 239 of these included reference lists and were included in the analysis. For the analysis, we used linlog and total link strength. The minimum cluster size was set to 15. There are 7 main clusters in the map.

VOSViewer files:

To open the map directly in VOSviewer, please use these the latest MAP and NET files, available through the Open Science Foundation (OSF) repository:
https://osf.io/54gqw/ 

 

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as of July 27th, 2020

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as it looks like at July 27th, 2020

This week’s post is a little different. This week we look at journals that have published 10 or more articles since March. There are 4585 journals, of which 706 have published 10 or more articles, thus in the analysis.

There are five clusters, of which one is much smaller than the others.

The table includes the 20 journals in each cluster with the highest closeness centrality.

 

Cluster 1 Nr. Documents Cluster 2 Nr. Documents Cluster 3 Nr. Documents Cluster 4 Nr. Documents Cluster 5 Nr. Documents
Diabetes And Metabolic Syndrome: Clinical Research And Reviews 105 Science Of The Total Environment 154 Journal Of Medical Virology 453 International Journal Of Environmental Research And Public Health 209 Jama – Journal Of The American Medical Association 164
BMJ 220 International Journal Of Infectious Diseases 153 Frontiers In Public Health 61 Sustainability (Switzerland) 66 Pediatric Pulmonology 31
Diabetes Research And Clinical Practice 58 Lancet 237 Medical Hypotheses 195 Brain, Behavior, And Immunity 85 Frontiers In Pediatrics 11
Head And Neck 88 Journal Of Infection 181 Nature Medicine 70 Asian Journal Of Psychiatry 121 Acta Paediatrica, International Journal Of Paediatrics 31
Dermatologic Therapy 208 Chaos, Solitons And Fractals 94 Pathogens 23 Psychiatry Research 121 Indian Journal Of Pediatrics 23
Eclinicalmedicine 49 Journal Of Clinical Virology 102 Frontiers In Immunology 47 International Journal Of Social Psychiatry 29 Journal Of Maternal-Fetal And Neonatal Medicine 31
American Journal Of Emergency Medicine 60 Journal Of Infection And Public Health 43 Frontiers In Medicine 52 Nature Human Behaviour 18 Lancet Child And Adolescent Health 29
International Journal Of Surgery 64 Journal Of Microbiology, Immunology And Infection 51 Clinica Chimica Acta 41 International Journal Of Mental Health And Addiction 31 International Journal Of Gynecology And Obstetrics 38
Research In Social And Administrative Pharmacy 46 Emerging Microbes And Infections 41 International Journal Of Molecular Sciences 45 Journal Of Community Health 17 American Journal Of Obstetrics And Gynecology 29
Lancet Respiratory Medicine 70 Eurosurveillance 57 Pharmacological Research 57 Pakistan Journal Of Medical Sciences 12 Revista Chilena De Anestesia 19
Otolaryngology – Head And Neck Surgery (United States) 76 Travel Medicine And Infectious Disease 125 Biomedicine And Pharmacotherapy 14 Encephale 15 Pediatric Research 20
Intensive Care Medicine 65 Lancet Infectious Diseases 114 Reviews In Medical Virology 16 Journal Of Global Health 46 Journal Of Pure And Applied Microbiology 34
Journal Of General Internal Medicine 48 European Review For Medical And Pharmacological Sciences 74 Infection, Genetics And Evolution 24 Tijdschrift Voor Economische En Sociale Geografie 27 Acta Obstetricia Et Gynecologica Scandinavica 12
Medicina Clinica 44 Infection Control And Hospital Epidemiology 125 Diagnostics 17 British Dental Journal 20 Reproductive Biomedicine Online 13
American Journal Of Transplantation 63 Plos One 65 Journal Of Biomolecular Structure And Dynamics 79 Environment, Development And Sustainability 10 Journal Of Paediatrics And Child Health 20
Internal And Emergency Medicine 36 Clinical Microbiology And Infection 46 Life Sciences 29 American Review Of Public Administration 38 Archives Of Disease In Childhood 19
Journal Of Cardiothoracic And Vascular Anesthesia 37 European Radiology 52 International Journal Of Antimicrobial Agents 49 Lancet Psychiatry 43 Jama Pediatrics 13
European Journal Of Internal Medicine 35 Gut 27 Journal Of Public Health (Germany) 16 Journal Of Affective Disorders 19 European Journal Of Obstetrics And Gynecology And Reproductive Biology 19
Journal Of Cleaner Production 68 Electronic Journal Of General Medicine 30 Microbes And Infection 28 Journal Of Loss And Trauma 16 Chest 21
Semergen 19 Journal Of Hospital Infection 61 New England Journal Of Medicine 131 General Psychiatry 10 Journal Of Gynecology Obstetrics And Human Reproduction 11

 

VOSViewer files:

To open the map directly in VOSviewer, please use these the latest MAP and NET files, available through the Open Science Foundation (OSF) repository:
https://osf.io/54gqw/ 

 

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as of July 20th, 2020

Network Visualization of Bibliometric Coupling Analysis of COVID-19 Literature as it looks like at July 20th, 2020

This week’s post is a little different. This week we look at articles published in the past four weeks, making our corpus: 10735 documents, downloaded from Scopus. 2023 of these included reference lists and were included in the analysis. For the analysis, we used linlog and total link strength.

The minimum cluster size was set to 15. There are 6 main clusters in the map. Similar to the co-occurrence analysis, the cluster structure seems very similar to that of all research, indicating general stability in the topics and types of research published.

 

 

 

VOSViewer files:

To open the map directly in VOSviewer, please use these the latest MAP and NET files, available through the Open Science Foundation (OSF) repository:
https://osf.io/54gqw/