Time trends in the male to female ratio for autism incidence: population based, prospectively collected, birth cohort study
Findings indicate that the male to female ratio for ASD has decreased over time and with increasing age at diagnosis. This male to female ratio may therefore be substantially lower than previously thought, to the extent that, in Sweden, it may no longer be distinguishable by adulthood. This finding highlights a need to investigate why girls and women receive diagnoses of ASD later than boys and men.
Authors
- Henric Winell (ORCID: https://orcid.org/0000-0001-7995-3047)
- H. K. Yip Benjamin
- Kristina Tedroff (ORCID: https://orcid.org/0000-0002-0456-8029)
- Caroline Fyfe (ORCID: https://orcid.org/0000-0002-6087-8339)
- Tychele N. Turner
- Sven Sandin
- Lauren A. Weiss
- Natasha Marrus
- Alexander Kolevzon
- Joseph Dougherty
- Weiyao Yin
- David H Gutmann
Institutions
- Chinese University of Hong Kong (HK)
- University of California, San Francisco (US)
- Washington University in St. Louis (US)
- Karolinska Institutet (SE)
- Hong Kong Jockey Club (HK)
- Icahn School of Medicine at Mount Sinai (US)
Publication Details
- Journal
- BMJ
- Published
- 2026-02-04
- DOI
- https://doi.org/10.1136/bmj-2025-084164
- Citations
- 3
- Primary Topic
- Autism Spectrum Disorder Research
- Type
- article
- Field-Weighted Citation Impact
- 89.14
Funders
- Karolinska Institutet