Science Map of Cochrane Systematic Reviews Receiving the Most Altmetric Attention Score: A Network Analysis

Jafar Kolahi¹, Saber Khazaei², Elham Bidram³, Roya Kelishadi⁴, Pedram Iranmanesh⁵, Abbasali Khademi⁶, Mohammad H. Nekoofar^7,8, Paul M. H. Dummer⁸

¹Independent Research Scientist, Founder and Associate Editor of Dental Hypotheses, Isfahan, IRAN.

²Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, IRAN.

³Biosensor Research Center, Department of Biomaterials, Nanotechnology, and Tissue Engineering School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, IRAN.

⁴Department of Pediatrics, Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, IRAN.

⁵Dental Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, IRAN.

⁶Dental Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, IRAN.

Abstract:

The present study aimed to analyze and visualize the science map of Cochrane systematic reviews (CSRs) with high Altmetric attention score (AAS). On 2020-07-29, the altmetric data of the Cochrane Database of Systematic Reviews were obtained from the Altmetric database (Altmetric LLP, London, UK). Bibliometric data of the top 5% AAS of CSRs were extracted from the Web of Science. Keyword co-occurrence, co-authorship and co-citation network analyses were then employed using VOSviewer software. The random forest model was used to rank the importance of the altmetric resource. A total of 11222 CSRs with AAS were found (Total mentions: 305265), with Twitter being the most popular Altmetric resource. Consequently, the top 5% AAS (649 articles, mean AAS: 204.95, 95% confidence level: 18.95, mean citations: 123.68, 95% confidence level: 13.9) were included. Density mapping revealed female, adult and child as the most popular author keywords. According to network visualization, Helen V. Worthington (University of Manchester, Manchester, UK), the University of Oxford and UK had the greatest impact on the network at the author, organization and country levels respectively. AAS were weekly correlated with citations (r_s=0.21) although citations were moderately correlated with policy document and blog mentions (r_s=0.46 and r_s=0.43). Cochrane systematic reviews received high levels of online attention, particularly in the Twittersphere and mostly from the UK. However, CSRs were rarely publicized and discussed using recently developed academic tools, such as F1000 prime, Publons and PubPeer.

Keywords: Altmetric, Bibliometric, Cochrane systematic review, Machine learning, Network analysis, Random forest, Twitter.