Evidence map›Paper›PMID 20019071›Full record

SynthesisSocial cognitive and affective neuroscience2010

ADHD and the DRD4 exon III 7-repeat polymorphism: an international meta-analysis.

Aki Nikolaidis, Jeremy R Gray

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in Social cognitive and affective neuroscience, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 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

31 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Effects of nicotine deprivation and replacement on BOLD-fMRI response to smoking cues as a function of DRD4 VNTR genotype.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2014
    Trial
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Brain sciences · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Imaging genetics in neurodevelopmental psychopathology.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2017
    Review
  18. Article
  19. Article
  20. Article
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

2 authors.

Aki NikolaidisDepartment of Psychology, Yale University, New Haven, CT, USA. gaki775@gmail.com
Jeremy R Gray

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We sought to elucidate the relationship of ADHD (Attention-Deficit Hyperactivity Disorder) to the DRD4 exon III VNTR 7R allele worldwide using analytic techniques and to relate these findings to the field of cultural neuroscience. To focus on a potential moderating role of race/ethnicity, we excluded over 30 papers that have explored the relationship between the DRD4 7R and ADHD but had unclear or lax racial-ethnic inclusion criteria. The papers in this meta-analysis were only included if a single race made up 95% or more of their sample. We searched for and translated papers not published in English, and found a significant difference in the relationship of ADHD and DRD4 7R in people of European-Caucasian (Odds ratio 1.635, Z = 3.936, P < 0.00001) and South American (Odds ratio 2.407, Z = 3.317, P = 0.001) descent vs people of Middle Eastern ancestry (Odds ratio 0.717, Z = -2.466; P = 0.014). We also examined the moderating effect of differing ADHD diagnoses, subject recruitment, control recruitment and male to female ratio. Finally, we consider the implications of these data for cultural neuroscience.

Indexed as

AllelesAnimalsAsian PeopleAttention Deficit Disorder with HyperactivityChildExonsFemaleGene FrequencyHumansLanguageMaleMiddle EastPatient SelectionReceptors, Dopamine D4Repetitive Sequences, Nucleic AcidRisk AssessmentDRD4 protein, humanReceptors, Dopamine D4

Identifiers

PMID20019071
PMCPMC2894686

What OpenQuestion holds

Textmetadata
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.