The UCLA-University of Utah epidemiologic survey of autism: prevalence
Abstract
The authors conducted an epidemiologic survey in Utah using a four-level ascertainment system, blind current diagnostic assessments, and DSM-III criteria. Of 483 individuals ascertained, 241 were diagnosed as having autism. The best estimate for the prevalence rate was 4 per 10,000 population. Autism was not associated with parental education, occupation, racial origin, or religion. Sixty-six percent of the autistic subjects scored below 70 on standardized IQ tests, and females scored proportionately lower than males. Twenty (9.7%) of 207 families had more than one autistic sibling, which supports the authors' previous finding that there may be a familial subtype of autism.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The concordance rate for siblings of individuals with autism of unknown cause ranges from 5 to 10% and approaches 35% in families with two or more affected children.
“The concordance rate for siblings of individuals with autism of unknown cause ranges from 5 to 10% and approaches 35% in families with two or more affected children (22–25).”
From Gene × Environment Interactions in Autism Spectrum Disorders: Role of Epigenetic Mechanisms (2014) · cites this paper as [25]
The overall prevalence of autism in parents between the Utah survey and the Gillberg et al. study is 2.3%.
“This gives an overall prevalence of autism in parents between the two studies of 2.3%.”
From Gene × Environment Interactions in Autism Spectrum Disorders: Role of Epigenetic Mechanisms (2014) · cites this paper as [25]
Substantial increases in the estimated prevalence of ASD in the United States have been reported since the 1990s.
“Substantial increases in the estimated prevalence of ASD in the United States have been reported since the 1990s.”
The citation lists haven’t been fetched yet
References 16 · Cited by 273
- Authors
- RITVO, E. R., Freeman, B. J., Pingree, C., MASON-BROTHERS, A., Jorde, L. B., Jenson, W. R., McMahon, W. M., Petersen, P. B., Mo, A., & Ritvo, A.
- Affiliations
- University of California, Los Angeles (US)
- ORCID
- Lynn B. Jorde
- Venue
- American Journal of Psychiatry
- Published
- 1989-02-01
- Volume
- 146
- Issue
- 2
- Pages
- 194-199
- ISSN
- 0002-953X (ISSN-L)
- 1535-7228
- OpenAlex
- W116391324
- Cited by
- 273
- References
- 16
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 4 · 2023: 2 · 2022: 8 · 2021: 6 · 2020: 5 · 2019: 17 · 2018: 4 · 2017: 4 · 2016: 6 · 2015: 11 · 2014: 12 · 2013: 9 · 2012: 17
- FWCI
- 4.61
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of Mental Health (MH 31274)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
- Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
- Keywords
- autism spectrum disorder, prevalence, epidemiological survey, Utah, DSM-III criteria, intelligence quotient, sex differences, familial aggregation, siblings, parental education
- MeSH terms
- Adolescent, Adult, Autistic Disorder, Child, Child, Preschool, Cross-Sectional Studies, Educational Status, Ethnicity, Female, Humans, Intelligence, Male, Occupations, Parents, Religion, Sex Factors, Social Class, Utah
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
