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Increasing number of authors in Cochrane reviews

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@article{5fd8a1b4338347149014142a96f4e8f0,
title = "Increasing number of authors in Cochrane reviews",
abstract = "OBJECTIVE: To investigate authorship trends in Cochrane reviews from 1996 to 2018, and to examine if the authorship criteria from the International Committee of Medical Journal Editors (ICMJE) were met for Cochrane reviews with more than 15 authors based on the text in the section {"}Contributions of authors.{"}METHODS: The median number of authors per review was calculated, and authorship trends within each editorial group were analyzed. The section {"}Contributions of authors{"} was assessed about the first and second authorship criteria from the ICMJE for reviews with more than 15 authors.RESULTS: A total of 7447 Cochrane reviews were studied based on data from the Cochrane Database of Systematic Reviews. The median number of authors per Cochrane review was 3 in 1996 (IQR 2.5-3, range 2-3), 4 in 2007 (IQR 3-5, range 1-13), and 5 in 2018 (IQR 4-7, range 2-22). Within each editorial group, the total number of authors either increased (26/55, 47{\%}) or was unchanged (29/55, 53{\%}). Based on the text in {"}Contributions of authors,{"} 59{\%} (16/27) of the reviews with more than 15 authors had authors that did not fulfil the ICMJE authorship criteria. However, the text in {"}Contributions of authors{"} was often difficult to interpret.CONCLUSIONS: The number of authors per Cochrane review gradually increased from 1996 to 2018. The ICMJE authorship criteria were probably not met by all authors in more than half of the reviews with more than 15 authors.",
keywords = "Authorship, Periodicals as Topic, Systematic Reviews as Topic",
author = "Seng{\"u}l G{\"u}len and Siv Fonnes and Kristoffer Andresen and Jacob Rosenberg",
note = "{\circledC} 2020 Chinese Cochrane Center, West China Hospital of Sichuan University and John Wiley & Sons Australia, Ltd.",
year = "2020",
month = "2",
doi = "10.1111/jebm.12371",
language = "English",
volume = "13",
pages = "34--41",
journal = "Journal of Evidence-Based Medicine",
issn = "1756-5383",
publisher = "Wiley-Blackwell Publishing Asia",
number = "1",

}

RIS

TY - JOUR

T1 - Increasing number of authors in Cochrane reviews

AU - Gülen, Sengül

AU - Fonnes, Siv

AU - Andresen, Kristoffer

AU - Rosenberg, Jacob

N1 - © 2020 Chinese Cochrane Center, West China Hospital of Sichuan University and John Wiley & Sons Australia, Ltd.

PY - 2020/2

Y1 - 2020/2

N2 - OBJECTIVE: To investigate authorship trends in Cochrane reviews from 1996 to 2018, and to examine if the authorship criteria from the International Committee of Medical Journal Editors (ICMJE) were met for Cochrane reviews with more than 15 authors based on the text in the section "Contributions of authors."METHODS: The median number of authors per review was calculated, and authorship trends within each editorial group were analyzed. The section "Contributions of authors" was assessed about the first and second authorship criteria from the ICMJE for reviews with more than 15 authors.RESULTS: A total of 7447 Cochrane reviews were studied based on data from the Cochrane Database of Systematic Reviews. The median number of authors per Cochrane review was 3 in 1996 (IQR 2.5-3, range 2-3), 4 in 2007 (IQR 3-5, range 1-13), and 5 in 2018 (IQR 4-7, range 2-22). Within each editorial group, the total number of authors either increased (26/55, 47%) or was unchanged (29/55, 53%). Based on the text in "Contributions of authors," 59% (16/27) of the reviews with more than 15 authors had authors that did not fulfil the ICMJE authorship criteria. However, the text in "Contributions of authors" was often difficult to interpret.CONCLUSIONS: The number of authors per Cochrane review gradually increased from 1996 to 2018. The ICMJE authorship criteria were probably not met by all authors in more than half of the reviews with more than 15 authors.

AB - OBJECTIVE: To investigate authorship trends in Cochrane reviews from 1996 to 2018, and to examine if the authorship criteria from the International Committee of Medical Journal Editors (ICMJE) were met for Cochrane reviews with more than 15 authors based on the text in the section "Contributions of authors."METHODS: The median number of authors per review was calculated, and authorship trends within each editorial group were analyzed. The section "Contributions of authors" was assessed about the first and second authorship criteria from the ICMJE for reviews with more than 15 authors.RESULTS: A total of 7447 Cochrane reviews were studied based on data from the Cochrane Database of Systematic Reviews. The median number of authors per Cochrane review was 3 in 1996 (IQR 2.5-3, range 2-3), 4 in 2007 (IQR 3-5, range 1-13), and 5 in 2018 (IQR 4-7, range 2-22). Within each editorial group, the total number of authors either increased (26/55, 47%) or was unchanged (29/55, 53%). Based on the text in "Contributions of authors," 59% (16/27) of the reviews with more than 15 authors had authors that did not fulfil the ICMJE authorship criteria. However, the text in "Contributions of authors" was often difficult to interpret.CONCLUSIONS: The number of authors per Cochrane review gradually increased from 1996 to 2018. The ICMJE authorship criteria were probably not met by all authors in more than half of the reviews with more than 15 authors.

KW - Authorship

KW - Periodicals as Topic

KW - Systematic Reviews as Topic

U2 - 10.1111/jebm.12371

DO - 10.1111/jebm.12371

M3 - Journal article

VL - 13

SP - 34

EP - 41

JO - Journal of Evidence-Based Medicine

JF - Journal of Evidence-Based Medicine

SN - 1756-5383

IS - 1

ER -

ID: 60646281