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Confidence intervals for Journal Impact Factors

Author

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  • Lutz Bornmann

    (Administrative Headquarters of the Max Planck Society)

Abstract

In this Letter to the Editor, it is proposed that the significance of the difference between two Journal Impact Factors be assessed by calculating confidence intervals. Formulas are provided which can be used to calculate the confidence interval on the basis of the number of papers published and the number of citations received.

Suggested Citation

  • Lutz Bornmann, 2017. "Confidence intervals for Journal Impact Factors," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(3), pages 1869-1871, June.
    • Handle: RePEc:spr:scient:v:111:y:2017:i:3:d:10.1007_s11192-017-2365-3
    DOI: 10.1007/s11192-017-2365-3
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    References listed on IDEAS

    as
    1. Williams, Richard & Bornmann, Lutz, 2016. "Sampling issues in bibliometric analysis," Journal of Informetrics, Elsevier, vol. 10(4), pages 1225-1232.
    2. Henk F. Moed, 2002. "Measuring China"s research performance using the Science Citation Index," Scientometrics, Springer;Akadémiai Kiadó, vol. 53(3), pages 281-296, March.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Juan Miguel Campanario, 2018. "Journals that Rise from the Fourth Quartile to the First Quartile in Six Years or Less: Mechanisms of Change and the Role of Journal Self-Citations," Publications, MDPI, vol. 6(4), pages 1-15, November.
    2. David I. Stern, 2017. "Comment on Bornmann (2017): confidence intervals for journal impact factors," Scientometrics, Springer;Akadémiai Kiadó, vol. 113(3), pages 1811-1813, December.
    3. Juan Miguel Campanario, 2018. "Are leaders really leading? Journals that are first in Web of Science subject categories in the context of their groups," Scientometrics, Springer;Akadémiai Kiadó, vol. 115(1), pages 111-130, April.
    4. Mingyang Wang & Shijia Jiao & Kah-Hin Chai & Guangsheng Chen, 2019. "Building journal’s long-term impact: using indicators detected from the sustained active articles," Scientometrics, Springer;Akadémiai Kiadó, vol. 121(1), pages 261-283, October.
    5. de Carvalho, Gustavo Dambiski Gomes & Sokulski, Carla Cristiane & da Silva, Wesley Vieira & de Carvalho, Hélio Gomes & de Moura, Rafael Vignoli & de Francisco, Antonio Carlos & da Veiga, Claudimar Per, 2020. "Bibliometrics and systematic reviews: A comparison between the Proknow-C and the Methodi Ordinatio," Journal of Informetrics, Elsevier, vol. 14(3).
    6. Gabriel-Alexandru Vȋiu & Mihai Păunescu, 2021. "The lack of meaningful boundary differences between journal impact factor quartiles undermines their independent use in research evaluation," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(2), pages 1495-1525, February.

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    Keywords

    Journal Impact Factor; Confidence interval;

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