Autistic Spectrum Disorder Symptoms in Children and Adolescents with Attention Deficit/Hyperactivity Disorder: a Meta-Analytical Review

Hollingdale J, Woodhouse E, Young S, Fridman A, Mandy W.

Psychol Med. 2019 Sep 18:1-14.

doi: 10.1017/S0033291719002368.

Commentary* by Dr. Margaret Weiss: One in five children with ADHD has ASD. The comorbid condition presents particular management challenges. Understanding the clustering of neurodevelopmental disorders together is important to optimizing appropriate treatment services.

ABSTRACT

BACKGROUND: Research identifies highly variable prevalence estimates for autism spectrum disorder (ASD) in children and adolescents with attention deficit hyperactivity disorder (ADHD), particularly between community and clinical samples, warranting quantitative meta-analyses to investigate the true prevalence of ASD in children and adolescents with ADHD.

METHODS: Studies were identified through a systematic literature search of PsycINFO, MEDLINE and Web of Science through January 2018. Twenty-two publications met inclusion criteria (total N = 61 985). Two random effects meta-analyses were conducted: (1) to identify the proportion of children and adolescents with ADHD that met criteria for ASD; and (2) to compare the severity of dimensionally-measured ASD symptomology in children and adolescents with and without ADHD.

RESULTS: The overall pooled effect for children and adolescents with ADHD who met threshold for ASD was 21%. There was no significant difference between community samples (19%) and clinical samples (24%) or between US studies v. those from other countries. Children and adolescents with ADHD had substantially more dimensionally-measured ASD traits compared with those who did not have ADHD (d = 1.23).

CONCLUSION: The findings provide further evidence that ADHD and ASD are associated in nature.

* Les résumés scientifiques (abstracts) sont sélectionnés pour leur pertinence clinique par Dre. Margaret Weiss, Directrice de la recherche clinique, pédopsychiatrie, Cambridge Health Alliance, Université Harvard. Ses commentaires reflètent sa propre opinion. Ils ne sont ni approuvés par la CADDRA, ni nécessairement représentatifs de celle-ci.