Evidence map›Paper›PMID 28140403›Full record

ArticleTranslational psychiatry2017

Medical history of discordant twins and environmental etiologies of autism.

C Willfors, T Carlsson, B-M Anderlid, A Nordgren, E Kostrzewa, S Berggren, A Ronald, R Kuja-Halkola, K Tammimies, S Bölte

Open access · goldAbstract readTwin Study
In one paragraph

Article in Translational psychiatry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Association Study ofFrontiers in psychiatry · 2021
    Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Minor physical anomalies in neurodevelopmental disorders: a twin study.Child and adolescent psychiatry and mental health · 2017
    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

10 authors at 4 institutions in 2 countries.

C WillforsKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
T CarlssonKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
B-M AnderlidDepartment of Molecular Medicine and Surgery, Center of Molecular Medicine, Karolinska Institutet, Solna, Sweden.
A NordgrenDepartment of Molecular Medicine and Surgery, Center of Molecular Medicine, Karolinska Institutet, Solna, Sweden.
E KostrzewaKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
S BerggrenKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
A RonaldGenes Environment Lifespan laboratory, Department of Psychological Sciences, Birkbeck, University of London, London, UK.
R Kuja-HalkolaDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Solna, Sweden.
K TammimiesKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
S BölteKarolinska Institutet Center for Neurodevelopmental Disorders, Pediatric Neuropsychiatry Unit, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
Karolinska Institutet · SEStockholm County Council · SEKarolinska University Hospital · SEBirkbeck, University of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The environmental contributions to autism spectrum disorder (ASD) and their informative content for diagnosing the condition are still largely unknown. The objective of this study was to investigate associations between early medical events and ASD, as well as autistic traits, in twins, to test the hypothesis of a cumulative environmental effect on ASD risk. A total of 80 monozygotic (MZ) twin pairs (including a rare sample of 13 twin pairs discordant for clinical ASD) and 46 dizygotic (DZ) twin pairs with varying autistic traits, were examined for intra-pair differences in early medical events (for example, obstetric and neonatal factors, first year infections). First, differences in early medical events were investigated using multisource medical records in pairs qualitatively discordant for ASD. The significant intra-pair differences identified were then tested in relation to autistic traits in the remaining sample of 100 pairs, applying generalized estimating equations analyses. Significant association of the intra-pair differences in the MZ pairs were found for the cumulative load of early medical events and clinical ASD (Z=-2.85, P=0.004) and autistic traits (β=78.18, P=0.002), as well as infant dysregulation (feeding, sleeping abnormalities, excessive crying and worriedness), when controlling for intelligence quotient and attention deficit hyperactivity disorder comorbidity. The cumulative load of early medical events in general, and infant dysregulation in particular, may index children at risk of ASD owing to non-shared environmental contributions. In clinical practice, these findings may facilitate screening and early detection of ASD.

Indexed as

EnvironmentTwins, DizygoticTwins, MonozygoticAdolescentAdultApgar ScoreAsthmaAttention Deficit Disorder with HyperactivityAutism Spectrum DisorderAutistic DisorderBirth WeightBreech PresentationCerebral HemorrhageChildEczemaEpilepsy

Identifiers

PMID28140403
PMCPMC5299390
OpenAlexW2583660246

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.