Evidence map›Paper›PMID 24374381›Full record

SynthesisNeuroscience and biobehavioral reviews2014

A meta-analysis of sex differences in human brain structure.

Amber N V Ruigrok, Gholamreza Salimi-Khorshidi, Meng-Chuan Lai, Simon Baron-Cohen, Michael V Lombardo, Roger J Tait, John Suckling

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in Neuroscience and biobehavioral reviews, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 537 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
537citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

537 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Pooled it
  4. Pooled it
  5. Trial
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  8. Article
  9. Article
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  11. Review
  12. Article
  13. Sex, Gender, and the Search for Analytic Truth.Journal of magnetic resonance imaging : JMRI · 2026
    Article
  14. Article
  15. Sex-specific brain reserve and progression from mild cognitive impairment to Alzheimer's disease dementia.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  16. Article
  17. Review
  18. Bidirectional association between irritability and executive function in youth from late childhood to early adolescence: Between- and within-person effects.Journal of research on adolescence : the official journal of the Society for Research on Adolescence · 2026
    Article
  19. Article
  20. Article

477 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Amber N V RuigrokAutism Research Centre, Department of Psychiatry, University of Cambridge, Douglas House, 18B Trumpington Road, Cambridge CB2 8AH, United Kingdom. Electronic address: ar560@cam.ac.uk.
Gholamreza Salimi-KhorshidiCentre for Functional MRI of the Brain (FMRIB), Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, United Kingdom.
Meng-Chuan LaiAutism Research Centre, Department of Psychiatry, University of Cambridge, Douglas House, 18B Trumpington Road, Cambridge CB2 8AH, United Kingdom; Department of Psychiatry, College of Medicine, National Taiwan University, No. 1 Jen-Ai Road Section 1, Taipei 10051, Taiwan.
Simon Baron-CohenAutism Research Centre, Department of Psychiatry, University of Cambridge, Douglas House, 18B Trumpington Road, Cambridge CB2 8AH, United Kingdom; Cambridgeshire and Peterborough NHS Foundation Trust, Elizabeth House, Fulbourn Hospital, Cambridge CB21 5EF, United Kingdom.
Michael V LombardoAutism Research Centre, Department of Psychiatry, University of Cambridge, Douglas House, 18B Trumpington Road, Cambridge CB2 8AH, United Kingdom; Department of Psychology, University of Cyprus, P.O. Box 20537, CY 1678 Nicosia, Cyprus.
Roger J TaitBrain Mapping Unit, School of Clinical Medicine, University of Cambridge, Herchel Smith Building, Robinson Way, Cambridge CB2 0SP, United Kingdom; Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom.
John SucklingCambridgeshire and Peterborough NHS Foundation Trust, Elizabeth House, Fulbourn Hospital, Cambridge CB21 5EF, United Kingdom; Brain Mapping Unit, School of Clinical Medicine, University of Cambridge, Herchel Smith Building, Robinson Way, Cambridge CB2 0SP, United Kingdom; Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom.

Funding

Medical Research Council G0001354Medical Research Council G0600977Medical Research Council G1000183Wellcome Trust 093875
6 · The paper itself

Abstract

The prevalence, age of onset, and symptomatology of many neuropsychiatric conditions differ between males and females. To understand the causes and consequences of sex differences it is important to establish where they occur in the human brain. We report the first meta-analysis of typical sex differences on global brain volume, a descriptive account of the breakdown of studies of each compartmental volume by six age categories, and whole-brain voxel-wise meta-analyses on brain volume and density. Gaussian-process regression coordinate-based meta-analysis was used to examine sex differences in voxel-based regional volume and density. On average, males have larger total brain volumes than females. Examination of the breakdown of studies providing total volumes by age categories indicated a bias towards the 18-59 year-old category. Regional sex differences in volume and tissue density include the amygdala, hippocampus and insula, areas known to be implicated in sex-biased neuropsychiatric conditions. Together, these results suggest candidate regions for investigating the asymmetric effect that sex has on the developing brain, and for understanding sex-biased neurological and psychiatric conditions.

Indexed as

AdolescentAdultAgedAged, 80 and overBrainChildChild, PreschoolFemaleHumansMaleMiddle AgedSex FactorsYoung AdultBrainGaussian-process regression (GPR)Meta-analysisSex differencesVolumeVoxel-based morphometry

Identifiers

PMID24374381
PMCPMC3969295

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.