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Walter Zahorodny; Josephine Shenouda; Kate Sidwell; Michael G. Verile; Cindy Cruz Alvarez; Arline Fusco; Audrey Mars; Mildred Waale; Tara Gleeson; Gail Burack; Paul Zumoff – Journal of Autism and Developmental Disorders, 2025
Purpose: Almost all epidemiologic studies estimating autism spectrum disorder (ASD) prevalence have focused on school-age children. This study provides the first population-based data on the prevalence and expression of ASD among adolescents in a large US metropolitan region. Methods: Active multiple source ASD surveillance of adolescents aged…
Descriptors: Autism Spectrum Disorders, Incidence, Adolescents, Symptoms (Individual Disorders)
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Jessica E. Goldblum; Tyler C. McFayden; Stephanie Bristol; Orla C. Putnam; Amanda Wylie; Clare Harrop – Journal of Autism and Developmental Disorders, 2024
Purpose: An official autism diagnosis is required to access timely intervention and is associated with better long-term wellbeing and mental health. Certain demographic characteristics, such as being female or a racially or ethnically minoritized youth, have been associated with significant diagnostic lag. However, it remains unclear how assigned…
Descriptors: Autism Spectrum Disorders, Individual Characteristics, Clinical Diagnosis, Incidence
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Miller, Haylie L.; Thomi, Morgan; Patterson, Rita M.; Nandy, Karabi – Journal of Autism and Developmental Disorders, 2023
Children with complex behavioral profiles (e.g., ASD + ADHD) may experience delays in obtaining a final diagnosis. Low-resource or underrepresented groups may be at even greater risk for delayed diagnosis. We assessed the effect of sociodemographic factors, symptom complexity and co-occurring conditions, and identifier of first symptoms on…
Descriptors: Autism Spectrum Disorders, Attention Deficit Hyperactivity Disorder, Comorbidity, Behavior Problems
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Chezan, Laura C.; Liu, Jin; Drasgow, Erik; Ding, Ruyi; Magana, Alexandro – Journal of Autism and Developmental Disorders, 2023
Our purpose in this study was to further examine the psychometric properties of the Quality of Life for Children with Autism Spectrum Disorder (QOLASD-C) scale. We first investigated the factor structure and the internal consistency of the scale. The bifactor model showed good fit and strong reliability. Second, we used multiple-indicators…
Descriptors: Quality of Life, Autism Spectrum Disorders, Psychometrics, Factor Structure
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Harrison, Ashley J.; Long, Kristin A.; Tommet, Douglas C.; Jones, Richard N. – Journal of Autism and Developmental Disorders, 2017
The Autism Diagnostic Observation Schedule (ADOS) is widely used to assess symptoms of autism spectrum disorder (ASD). Given well-documented differences in social behaviors across cultures, this study examined whether item-level biases exist in ADOS scores across sociodemographic groups (race, ethnicity, and gender). We examined a subset of ten…
Descriptors: Autism, Observation, Diagnostic Tests, Pervasive Developmental Disorders
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Safer-Lichtenstein, Jonathan; Hamilton, Jillian C.; McIntyre, Laura Lee – Journal of Autism and Developmental Disorders, 2019
We reviewed the demographic reporting practices and diversity of participants in published randomized controlled trial studies of group-based social skills interventions (GSSIs) for individuals with autism spectrum disorder (ASD). A total of 17 studies met inclusionary criteria. Results of this review suggest that the majority of published RCTs…
Descriptors: Autism, Pervasive Developmental Disorders, Randomized Controlled Trials, Intervention
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Angell, Amber M.; Deavenport-Saman, Alexis; Yin, Larry; Zou, Baiming; Bai, Chen; Varma, Deepthi; Solomon, Olga – Journal of Autism and Developmental Disorders, 2021
Autistic children have a high prevalence of co-occurring mental health, developmental/behavioral, and medical conditions, but research on sex/gender differences has been mixed. We used Florida healthcare claims data to characterize sex differences (female/male) in co-occurring conditions among autistic children ages 1-21 (N = 83,500). After…
Descriptors: Gender Differences, Comorbidity, Mental Health, Incidence
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Goh, D. A.; Gan, D.; Kung, J.; Baron-Cohen, S.; Allison, C.; Chen, H.; Saw, S. M.; Chong, Y. S.; Rajadurai, V. S.; Tan, K. H.; Shek, P. C. L.; Yap, F.; Broekman, B. F. P.; Magiati, I. – Journal of Autism and Developmental Disorders, 2018
Current research on children's autistic traits in the general population relies predominantly on caregiver-report, yet the extent to which individual, caregiver or demographic characteristics are associated with informants' ratings has not been sufficiently explored. In this study, caregivers of 396 Singaporean two-year-olds from a birth cohort…
Descriptors: Mothers, Autism, Symptoms (Individual Disorders), Toddlers
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Gal, Gilad; Abiri, Lili; Reichenberg, Abraham; Gabis, Lidia; Gross, Raz – Journal of Autism and Developmental Disorders, 2012
Reports indicate sharp increase in prevalence of autism spectrum disorders (ASD). We aimed to assess the time trend in prevalence of ASD in Israel and describe demographic characteristics of the registered cases. We reviewed the autism registry of the Israeli Ministry of Social Affairs which includes 4,709 cases and identified 4,138 cases born…
Descriptors: Jews, Incidence, Autism, Foreign Countries
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Wong, Virginia C. N.; Fung, Cecilia K. Y.; Wong, Polly T. Y. – Journal of Autism and Developmental Disorders, 2014
Data from 1,261 Chinese Autistic Spectrum Disorder (ASD) patients were evaluated and categorized into dysmorphic (10.79%) and non-dysmorphic groups (89.21%) upon physical examination by the presence of dysmorphic features. Abnormal MRI/CT result, IQ scores and epilepsy were significantly associated with the dysmorphic group of ASD children.…
Descriptors: Foreign Countries, Pervasive Developmental Disorders, Autism, Classification