Evidence map›Paper›PMID 18590567›Full record

SynthesisBMC psychiatry2008

Structural brain change in Attention Deficit Hyperactivity Disorder identified by meta-analysis.

Ian Ellison-Wright, Zoë Ellison-Wright, Ed Bullmore

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in BMC psychiatry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed, 7 pooled it
8.7field-weighted citation impact, top 2% of its field
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

117 citing papers in PubMed, 7 syntheses or guidelines pooled it, 273 citations in OpenAlex.

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57 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

3 authors at 3 institutions in 1 country.

Ian Ellison-WrightAvon and Wiltshire Mental Health Partnership NHS Trust, Salisbury, UK. ian.ew@inbox.com
Zoë Ellison-Wright
Ed Bullmore
Avon and Wiltshire Mental Health Partnership NHS Trust · GBDorset County Hospital NHS Foundation Trust · GBUniversity of Cambridge · GB

Funding

Medical Research Council G0001354
6 · The paper itself

Abstract

backgroundThe authors sought to map gray matter changes in Attention Deficit Hyperactivity Disorder (ADHD) using a novel technique incorporating neuro-imaging and genetic meta-analysis methods.

methodsA systematic search was conducted for voxel-based structural magnetic resonance imaging studies of patients with ADHD (or with related disorders) in relation to comparison groups. The authors carried out meta-analyses of the co-ordinates of gray matter differences. For the meta-analyses they hybridised the standard method of Activation Likelihood Estimation (ALE) with the rank approach used in Genome Scan Meta-Analysis (GSMA). This system detects three-dimensional conjunctions of co-ordinates from multiple studies and permits the weighting of studies in relation to sample size.

resultsFor gray matter decreases, there were 7 studies including a total of 114 patients with ADHD (or related disorders) and 143 comparison subjects. Meta-analysis of these studies identified a significant regional gray matter reduction in ADHD in the right putamen/globus pallidus region. Four studies reported gray matter increases in ADHD but no regional increase was identified by meta-analysis.

conclusionIn ADHD there is gray matter reduction in the right putamen/globus pallidus region. This may be an anatomical marker for dysfunction in frontostriatal circuits mediating cognitive control. Right putamen lesions have been specifically associated with ADHD symptoms after closed head injuries in children.

Indexed as

Magnetic Resonance ImagingAttention Deficit Disorder with HyperactivityBrainGenomeHumans

Identifiers

PMID18590567
PMCPMC2453122
OpenAlexW1997784861

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.