Authorship Trends and Disparities in Cardiothoracic Surgery.

Background: Previous investigations have revealed significant gender disparities in the academic arenas of cardiothoracic surgery. However, the status of gender representation in cardiothoracic publications has not been well described. This study aimed to evaluate authorship trends by gender in two high-impact cardiothoracic surgical journals.

Methods: In this bibliometric analysis, PubMed was searched for articles published in The Annals of Thoracic Surgery and the Journal of Thoracic and Cardiovascular Surgery from 2010 to 2021. The web-based application Genderize.io was used to classify names of first and last authors as men vs women. The Cochran-Armitage trend test and multivariable logistic regression were used to evaluate authorship per year and the association of first and last author gender, respectively.

Results: Among 14,443 articles, 16.7% had women first authors and 8.1% had women last authors. The proportion of articles written by women authors increased, rising from 12.6% to 21.1% (P < .0001) for first and 5.4% to 11.5% (P < .0001) for last authors. Papers written with women as first author were associated with 2.0 higher odds of having a woman as last author (95% CI, 1.7-2.3; P < .0001). The mean number of last author publications was higher for men than for women (2.4 vs 1.7, P < .0001).

Conclusions: Over the past decade, despite a welcomed increase in women authorship in high-impact journals in cardiothoracic surgery, women represent a small proportion of published authors. Women first authors are more likely to publish with women last authors, demonstrating the impact of same-gender collaborations while emphasizing a need for cross-gender mentorship.