An analysis of neuroscience and psychiatry papers published from 2009 and 2019 outlines opportunities for increasing discovery of sex differences

Rebecca K. Rechlin, Tallinn F. L. Splinter, Travis E. Hodges, Arianne Y. Albert and Liisa A. M. Galea ()
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Rebecca K. Rechlin: University of British Columbia
Tallinn F. L. Splinter: University of British Columbia
Travis E. Hodges: University of British Columbia
Arianne Y. Albert: University of British Columbia
Liisa A. M. Galea: University of British Columbia

Nature Communications, 2022, vol. 13, issue 1, 1-14

Abstract: Abstract Sex differences exist in many neurological and psychiatric diseases, but these have not always been addressed adequately in research. In order to address this, it is necessary to consider how sex is incorporated into the design (e.g. using a balanced design) and into the analyses (e.g. using sex as a covariate) in the published literature. We surveyed papers published in 2009 and 2019 across six journals in neuroscience and psychiatry. In this sample, we find a 30% increase in the percentage of papers reporting studies that included both sexes in 2019 compared with 2009. Despite this increase, in 2019 only 19% of papers in the sample reported using an optimal design for discovery of possible sex differences, and only 5% of the papers reported studies that analysed sex as a discovery variable. We conclude that progress to date has not been sufficient to address the importance of sex differences in research for discovery and therapeutic potential for neurological and psychiatric disease.

Date: 2022
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DOI: 10.1038/s41467-022-29903-3

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