Realism and robustness require increased sample size when studying both sexes

A recent article claimed that researchers need not increase the overall sample size for a study that includes both sexes. This Formal Comment points out that that study assumed two sexes to have the same variance, and explains why this is a unrealistic assumption.

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Bibliographic Details
Published in:PLoS biology 2024-04, Vol.22 (4), p.e3002456-e3002456
Main Authors: Drobniak, Szymon M, Lagisz, Malgorzata, Yang, Yefeng, Nakagawa, Shinichi
Format: Article
Language:English
Subjects:
Biological research
Biology and Life Sciences
Biology, Experimental
Computer and Information Sciences
Engineering and Technology
Females
Formal Comment
Gender differences
Medicine and Health Sciences
People and Places
Physical Sciences
Realism
Research and Analysis Methods
Robustness
Scale models
Science Policy
Sex differences
Sexes
Simulation
Statistical power
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Description
Summary:A recent article claimed that researchers need not increase the overall sample size for a study that includes both sexes. This Formal Comment points out that that study assumed two sexes to have the same variance, and explains why this is a unrealistic assumption.
ISSN:1545-7885
1544-9173
1545-7885
DOI:10.1371/journal.pbio.3002456