• Hamed Basir Ghafouri, Hafez Mohammadhassanzadeh, Farhad Shokraneh, Maryam Vakilian, and Shervin Farahmand.
• Emergency Department, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
• Emerg Med J. 2014 Aug 1;31(8):619-24.

BackgroundThe purpose of this study was to report interaction patterns among Iranian authors of emergency medicine using social network analysis methodology, focusing on coauthorship network.MethodsThe bibliographic data of Iranian authors on the 'emergency medicine' field during the years 2001-2011 were retrieved from the Science Citation Index Expanded database. Co-occurrence matrices were made by BibExcel and were imported to Ucinet and NetDraw to delineate coauthorship network. To detect structural patterns among authors, we considered some measures of social network analysis, such as density, centralisation indices, component analysis and cut-points. Lastly, subject experts separately analysed the content of papers.ResultsOf 116 papers published, the network was composed of 10 components, with the largest component having 25 authors. Using social network analysis measures, we identified science bottlenecks in knowledge sharing, hub authors and accelerators of information flow. Topic analysis showed 'Wounds and Injuries' as the most recent theme in all components because of existence of national registry for trauma, high burden of road traffic injuries and research priority of injuries in Iran.Conclusionsbecause of Iranian low productivity in the emergency medicine field, social network analysis seems to be a proper option for bibliometrics to identify central authors and detect knowledge structure in this field.Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

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