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Research trends within aneurysmal subarachnoid hemorrhage from 2017 to 2021: a bibliometric study

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Abstract

Bibliometric analyses are a well-established strategy for understanding the dynamics of publications. Aneurysmal subarachnoid hemorrhage (aSAH) is a hot topic in neurology and neurosurgery research. To perform a bibliometric analysis of recent publications within aSAH. Articles addressing aSAH published between 2017 and 2021 were included and had their information extracted from Scopus. A total of 2177 articles were included. The mean number of citations was 6.18 (95%CI = 5.77–6.59). 2021 and 2020 were the most prolific years. World Neurosurgery (N = 389/2,177 articles; 17,87%) was the leading publisher, and American Journal of Neuroradiology had the highest number of citations per article (14.82) among journals with ≥ 10 publications. Primary research (N = 1624/2177) predominated, followed by case reports (N = 434/2,177). Among secondary studies, systematic reviews (N = 78/119) surpassed narrative reviews (N = 41/119). USA led the number of publications (N = 548/2,177 articles; 25.17%), followed by China (N = 358/2,177 articles; 16.44%). High-income countries had a higher number of publications (N = 1624/2177) and more citations per article (6.84) than middle-income countries (N = 553/2177 and 4.25, respectively). There were zero articles from low-income countries. European and North American institutions had the greatest research impact. There was an increase in the number of published articles in the last few years (2020 and 2021). Many studies had a low level of evidence, whereas interventional studies were uncommon.

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Authors and Affiliations

  1. School of Medicine, University of São Paulo, São Paulo, SP, Brazil

    Guilherme José da Costa Borsatto

  2. Department of Neurosurgery, Hospital Do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil

    Miguel Bertelli Ramos

  3. Department of Neurology, University of São Paulo, São Paulo, SP, Brazil

    João Paulo Mota Telles

  4. Division of Neurosurgery, University of São Paulo, Dr. Eneas de Carvalho Aguiar Avenue, 255, São Paulo, SP, 05403-000, Brazil

    Nícollas Nunes Rabelo, Manoel Jacobsen Teixeira & Eberval Gadelha Figueiredo

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Contributions

Guilherme Borsatto: conceptualization, investigation, data curation, writing — original draft, project administration. Miguel Bertelli Ramos: methodology, software, formal analysis, writing — review and editing. João Paulo Mota Telles: conceptualization, validation, writing — review and editing, supervision. Nícollas Nunes Rabelo: supervision, writing — review and editing. Manoel Jacobsen Teixeira: supervision, writing — review and editing. Eberval Gadelha Figueiredo: Supervision, project administration, writing — review and editing.

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Correspondence to Eberval Gadelha Figueiredo.

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da Costa Borsatto, G.J., Bertelli Ramos, M., Mota Telles, J.P. et al. Research trends within aneurysmal subarachnoid hemorrhage from 2017 to 2021: a bibliometric study. Neurosurg Rev 46, 165 (2023). https://doi.org/10.1007/s10143-023-02056-7

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