Trends and influences in women authorship in randomised controlled trials in rheumatology: a comprehensive analysis of all published randomised controlled trials (RCTs) from 2009 to 2023

RMD OpenPublished Meta-research study

Authors' conclusion

The persistent under-representation of women in RCTs and their lower chances of being senior authors highlight the need for better strategies to close the gender gap.

Study context

Population
All RCTs published in rheumatology from 2009 to 2023 and their authorsauthors of 1092 RCTs
Participants
10,794 participants
Outcome
Women's gender of authors (percentage of women as authors)
Methodological detailscross-sectional bibliometric analysis of published RCTs, generalised estimating equations, gender determined using Gender API
  • Cross-sectional bibliometric analysis of published RCTs
  • Generalised estimating equations
  • Gender determined using Gender API

Main finding

As reported in the abstract

Women as authors of all authors (overall non-adjusted estimate)

Women as proportion of all authors

39.8%

95% CI 38.4% to 41.2%

Observational data: associations, not effects.

Further findings

Women authorship when the last author was a woman

OR (95% CI)
Woman last author+19.46 pp2.34 (1.02–5.38)

Women authorship in industry-funded RCTs

OR (95% CI)
Industry-funded RCTs−5.85 pp0.79 (0.66–0.93)

Women as last authors

OR (95% CI)
Women−10.2 pp; women less often last authors0.63 (0.54–0.74)

Women as second-to-last authors

OR (95% CI)
Women−10.19 pp; women less often second-to-last authors0.73 (0.62–0.85)

Women authorship when the last author was a woman

Women authorship higher in African-based RCTs and among pharmaceutical-affiliated authors

Women authorship in industry-funded RCTs

Women authorship lower in Asian and European RCTs

Women as second-to-last authors

No differences by international status or publication year

Original publication

Trends and influences in women authorship in randomised controlled trials in rheumatology: a comprehensive analysis of all published RCTs from 2009 to 2023. RMD Open. Published 27 March 2025. doi:10.1136/rmdopen-2024-005341

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