Evidence map›Paper›PMID 28490562›Full record

ArticleBMJ open2017

Autism spectrum disorder: updated prevalence and comparison of two birth cohorts in a nationally representative Australian sample.

Tamara May, Emma Sciberras, Amanda Brignell, Katrina Williams

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 6 pooled it
5.3field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 6 syntheses or guidelines pooled it, 97 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Global prevalence of autism: A systematic review update.Autism research : official journal of the International Society for Autism Research · 2022
    Pooled it
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  7. Trial
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  9. Review
  10. Article
  11. Community views on the assessment and diagnosis of autism: Principles to guide clinical practice.Autism : the international journal of research and practice · 2026
    Article
  12. Diagnostic tests for autism spectrum disorder (ASD) in preschool children.The Cochrane database of systematic reviews · 2026
    Article
  13. Article
  14. AnFrontiers in psychiatry · 2026
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  15. Article
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  19. Article
  20. Evaluation of the Lebanese Adults' Knowledge Regarding Autism Spectrum Disorder.International journal of environmental research and public health · 2023
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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

4 authors at 2 institutions in 1 country.

Tamara MayDepartment of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
Emma SciberrasMurdoch Childrens Research Institute, Parkville, Victoria, Australia.
Amanda BrignellDepartment of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
Katrina WilliamsDepartment of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
Murdoch Children's Research Institute · AUUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aimed to (1) provide an update on the prevalence of parent-reported autism spectrum disorder (ASD) diagnosis and new information about teacher-reported ASD in two nationally representative Australian cohorts at ages 10-11 years, (2) examine differences in cohort demographic and clinical profiles and (3) compare the prevalence of teacher-reported ASD and any changes in categorisation over time across the cohorts.

designSecondary analyses were undertaken using data from the Longitudinal Study of Australian Children (LSAC).

participantsChildren were recruited at kindergarten age (K cohort; birth year 1999/2000) and birth (B cohort; birth year 2003/2004), with follow-up of every 2  years for six waves. PRIMARY OUTCOME MEASURES: Parent-reported and teacher-reported ASD diagnosis was ascertained at three time points (waves 4-6).

resultsAt age 10-11 years, the adjusted prevalence of parent-reported ASD diagnosis was 3.9% (95% CI 3.2 to 4.5) and 2.4% (95% CI 1.6 to 2.9) in the B and K cohorts, respectively. Teacher-reported prevalence of ASD was 1.7% (95% CI 1.2 to 2.1) in the B cohort and 0.9% (95% CI 0.56 to 1.14) in the K cohort. Parents reported fewer conduct and peer problems and teachers more pro-social behaviour in B relative to K cohort ASD children. Children reported only by parents in the later-born B cohort had milder behaviour problems than parent-agreed and teacher-agreed cases. Although individual switching to ASD from other categories from 8-9 to 10-11 years was low (K cohort n=5, B cohort n=6), teachers reported more children with ASD in the B than K cohort at 10-11 years and fewer children with emotional/ behavioural problems.

conclusionsThe higher prevalence of parent-reported and teacher-reported ASD diagnosis in the later-born cohort may be partially explained by identifying children with milder behavioural problems as ASD and a change in the use of diagnostic categories in schools.

Indexed as

ParentsSchoolsAustraliaAutism Spectrum DisorderChildCognitionFemaleHumansLinear ModelsLongitudinal StudiesMalePrevalenceQuality of LifeSeverity of Illness IndexSocial BehaviorAutism Spectrum Disorderepidemiologyprevalence

Identifiers

PMID28490562
PMCPMC5623420
OpenAlexW2612814028

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.