Metaresearch study highlights the gender gap in randomized controlled trials in dentistry

This study aimed to assess the gender gap in randomized controlled trials (RCTs) in dentistry in terms of authorship, collaborations, metrics, funding and reporting of good research practice and transparecy.

The search was performed in PubMed for RCTs restricted to English texts in the dental field, indexed from 12/31/2016 to 12/31/2021. Two reviewers screened the studies in line with the eligibility criteria. A total of 844 articles were included. The name and gender of authors, citation metrics, funding, reporting of characteristics of good research practice and transparency were extracted. We considered "collaboration between authors" when the corresponding author was different from the first author.

The proportion of women as first authors was 46.56% and 40.12% for corresponding authors. The analysis showed that when a woman is the corresponding author, the probability of the first author also being a woman is 57% higher compared to the first author being a man. For "protocol registration" and "data sharing," the prevalence of reporting was higher when women were first authors.

A gender gap in dentistry RCTs was identified and related to the participation of women as first and corresponding authors and the collaboration between authors.