Safety, quality & education

Factors associated with women authorship over 25 years in high-impact critical care randomized controlled trials: the pipeline is still leaking

Crit CarePublished Meta-epidemiological study

Authors' conclusion

Although the proportion of women in authorship has risen over 25 years, women are still widely underrepresented in the authors of high-impact RCTs, especially as first and senior authors.

Study context

Population
Authors of adult critical care randomized controlled trials (RCTs) published 1999–2023 in the six highest-impact general and critical care journals
Participants
1,203 RCTs
Outcome
Proportion of women among the authors
Methodological detailsgeneralized linear mixed models, Sex assessed by authors' biographies, photographs, the gender R package and a native Chinese speaker's assistance
  • Generalized linear mixed models
  • Sex assessed by authors' biographies, photographs, the gender R package and a native Chinese speaker's assistance

Main finding

As reported in the abstract

Proportion of women among authors
Women among all authors
4,335 out of 16,057 authors (27%)
Women as first authors
247/1,199 [21%], p < 0.001
Women as senior authors
174/1,199 [15%], p < 0.001
Change rate per year
0.7% per year ([0.5%-0.9%])
Proportion in 1999 vs 2023
18% in 1999 to 32% in 2023

Further findings

OutcomeOR (95% CI)P value
Factors associated with proportion of women (multivariable analysis)Year of publication (per year)1.05 (1.02–1.09)P < 0.01
Factors associated with proportion of women (multivariable analysis)Sample size (per 100 patients increase)1.007 (1.003–1.012)P = 0.01

Factors associated with proportion of women (multivariable analysis)

OR (95% CI)P value
European RCTs0.53 (0.33–0.85)P < 0.01
RCTs on ventilation0.50 (0.25–0.97)P = 0.04
RCTs on sepsis0.74 (0.37–1.46)P = 0.39
Mortality as primary outcome0.36 (0.14–0.92)P = 0.03
Endorsement by a study group0.36 (0.18–0.69)P < 0.01

Original publication

Factors associated with women authorship over 25 years in high-impact critical care randomized controlled trials: the pipeline is still leaking. Crit Care. Published 28 August 2025. doi:10.1186/s13054-025-05627-w

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