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Gender differences in autism spectrum disorders: Divergence among specific core symptoms.

Artikel i vetenskaplig tidskrift
Författare Anita Beggiato
Hugo Peyre
Anna Maruani
Isabelle Scheid
Maria Rastam
Frederique Amsellem
I Carina Gillberg
Marion Leboyer
Thomas Bourgeron
Christopher Gillberg
Richard Delorme
Publicerad i Autism research : official journal of the International Society for Autism Research
Volym 10
Nummer/häfte 4
Sidor 680–689
ISSN 1939-3806
Publiceringsår 2017
Publicerad vid Gillbergcentrum
Sidor 680–689
Språk en
Länkar dx.doi.org/10.1002/aur.1715
Ämnesord autism diagnosis interview-revised; autism spectrum disorders; gender; sex
Ämneskategorier Barn- och ungdomspsykiatri

Sammanfattning

Community-based studies have consistently shown a sex ratio heavily skewed towards males in autism spectrum disorders (ASD). The factors underlying this predominance of males are largely unknown, but the way girls score on standardized categorical diagnostic tools might account for the underrecognition of ASD in girls. Despite the existence of different norms for boys and girls with ASD on several major screening tests, the algorithm of the Autism Diagnosis Interview-Revised (ADI-R) has not been reformulated. The aim of our study was to investigate which ADI-R items discriminate between males and females, and to evaluate their weighting in the final diagnosis of autism. We then conducted discriminant analysis (DA) on a sample of 594 probands including 129 females with ASD, recruited by the Paris Autism Research International Sibpair (PARIS) Study. A replication analysis was run on an independent sample of 1716 probands including 338 females with ASD, recruited through the Autism Genetics Resource Exchange (AGRE) program. Entering the raw scores for all ADI-R items as independent variables, the DA correctly classified 78.9% of males and 72.9% of females (P < 0.001) in the PARIS cohort, and 72.2% of males and 68.3% of females (P < 0.0001) in the AGRE cohort. Among the items extracted by the stepwise DA, four belonged to the ADI-R algorithm used for the final diagnosis of ASD. In conclusion, several items of the ADI-R that are taken into account in the diagnosis of autism significantly differentiates between males and females. The potential gender bias thus induced may participate in the underestimation of the prevalence of ASD in females. Autism Res 2016,. © 2016 International Society for Autism Research, Wiley Periodicals, Inc.

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