Women are generally under-represented as authors of publications, and especially as last authors, but this under-representation may not be uniformly distributed across countries. We aimed to document by country and region the proportion of female authors (PFA) in high-impact general medical journals.
We used PyMed, a Python library that provides access to PubMed, to retrieve all PubMed articles published between January 2012 and December 2021 in the fifty general internal medicine journals with the highest 2020 impact factor according to Journal Citation Reports. We extracted first/last authors' main country of affiliation for all these articles using regular expressions and manual search, and grouped the countries into eight regions (North/Latin America, Western/Eastern Europe, Asia, Pacific, Middle East, and Africa). We used NamSor to determine first/last authors' gender and computed the PFA for each country/region.
We retrieved 163,537 publications for first authors and 135,392 for last authors. Gender could be determined for 160,891 and 133,373 publications, respectively. The PFA was 41% for first authors and 33% for last authors, but it varied widely by country (first authors: >50% for eight countries, maximum = 63% in Romania, minimum = 19% in Japan; last authors: >50% for two countries, maximum = 53% in Romania, minimum = 9% in Japan). The PFA also varied by region. It was highest for Eastern Europe (first authors = 53%, last authors = 40%), and lowest for Asia (36% and 29%) and the Middle East (35% and 27%).
We found that the PFA varied widely by country and region, and was lowest in Asia, particularly Japan, and the Middle East. The under-representation of women as authors of publications, especially in these two regions, needs to be addressed and correcting persistent gender discrimination in research should be a top priority.