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Bougeard C, Picarel-Blanchot F, Schmid R, Campbell R, Buitelaar J. Prevalence of Autism Spectrum Disorder and Co-Morbidities in Children and Adolescents: A Systematic Literature Review. FOCUS (AMERICAN PSYCHIATRIC PUBLISHING) 2024; 22:212-228. [PMID: 38680973 PMCID: PMC11046711 DOI: 10.1176/appi.focus.24022005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Objective Individuals with autism spectrum disorder often present somatic and/or psychiatric co-morbid disorders. The DSM-5 allows for consideration of additional diagnoses besides ASD and may have impacted the prevalence of co-morbidities as well as being limited in capturing the true differences in prevalence observed between males and females. We describe the prevalence of ASD and frequently observed co-morbidities in children and adolescents (<18 years) in the United States and five European countries. Methods Two systematic literature reviews were conducted in PubMed and Embase for the period 2014-2019 and focusing on the prevalence of ASD and nine co-morbidities of interest based on their frequency and/or severity: Attention Deficit Hyperactivity Disorder (ADHD), anxiety, depressive disorders, epilepsy, intellectual disability (ID), sleep disorders, sight/hearing impairment/loss, and gastro-intestinal syndromes (GI). Results Thirteen studies on prevalence of ASD and 33 on prevalence of co-morbidities were included. Prevalence of ASD was 1.70 and 1.85% in U.S children aged 4 and 8 years respectively, while prevalence in Europe ranged between 0.38 and 1.55%. Additionally, current evidence is supportive of a global increase in ASD prevalence over the past years. Substantial heterogeneity in prevalence of co-morbidities was observed: ADHD (0.00-86.00%), anxiety (0.00-82.20%), depressive disorders (0.00-74.80%), epilepsy (2.80-77.50%), ID (0.00-91.70%), sleep disorders (2.08-72.50%), sight/hearing impairment/loss (0.00-14.90%/0.00-4.90%), and GI syndromes (0.00-67.80%). Studies were heterogeneous in terms of design and method to estimate prevalence. Gender appears to represent a risk factor for co-morbid ADHD (higher in males) and epilepsy/seizure (higher in females) while age is also associated with ADHD and anxiety (increasing until adolescence). Conclusion Our results provide a descriptive review of the prevalence of ASD and its co-morbidities in children and adolescents. These insights can be valuable for clinicians and parents/guardians of autistic children. Prevalence of ASD has increased over time while co-morbidities bring additional heterogeneity to the clinical presentation, which further advocates for personalized approaches to treatment and support. Having a clear understanding of the prevalence of ASD and its co-morbidities is important to raise awareness among stakeholders.Appeared originally in Front Psychiatry 2021; 12:744709.
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Affiliation(s)
- Clémence Bougeard
- Syneos Health, Value Access & HEOR, Montrouge, France (Bougeard); Servier Global Medical and Patients Affairs, Suresnes, France (Picarel-Blanchot); Servier, Global Value & Access, Suresnes, France (Schmid); Syneos Health, Value Access & HEOR, London, United Kingdom (Campbell); Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands (Buitelaar)
| | - Françoise Picarel-Blanchot
- Syneos Health, Value Access & HEOR, Montrouge, France (Bougeard); Servier Global Medical and Patients Affairs, Suresnes, France (Picarel-Blanchot); Servier, Global Value & Access, Suresnes, France (Schmid); Syneos Health, Value Access & HEOR, London, United Kingdom (Campbell); Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands (Buitelaar)
| | - Ramona Schmid
- Syneos Health, Value Access & HEOR, Montrouge, France (Bougeard); Servier Global Medical and Patients Affairs, Suresnes, France (Picarel-Blanchot); Servier, Global Value & Access, Suresnes, France (Schmid); Syneos Health, Value Access & HEOR, London, United Kingdom (Campbell); Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands (Buitelaar)
| | - Rosanne Campbell
- Syneos Health, Value Access & HEOR, Montrouge, France (Bougeard); Servier Global Medical and Patients Affairs, Suresnes, France (Picarel-Blanchot); Servier, Global Value & Access, Suresnes, France (Schmid); Syneos Health, Value Access & HEOR, London, United Kingdom (Campbell); Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands (Buitelaar)
| | - Jan Buitelaar
- Syneos Health, Value Access & HEOR, Montrouge, France (Bougeard); Servier Global Medical and Patients Affairs, Suresnes, France (Picarel-Blanchot); Servier, Global Value & Access, Suresnes, France (Schmid); Syneos Health, Value Access & HEOR, London, United Kingdom (Campbell); Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands (Buitelaar)
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Georgoula C, Ferrin M, Pietraszczyk-Kedziora B, Hervas A, Marret S, Oliveira G, Rosier A, Crutel V, Besse E, Severo CA, Ravel D, Fuentes J. A Phase III Study of Bumetanide Oral Liquid Formulation for the Treatment of Children and Adolescents Aged Between 7 and 17 Years with Autism Spectrum Disorder (SIGN 1 Trial): Participant Baseline Characteristics. Child Psychiatry Hum Dev 2023; 54:1360-1372. [PMID: 35292925 DOI: 10.1007/s10578-022-01328-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/22/2021] [Accepted: 02/05/2022] [Indexed: 02/08/2023]
Abstract
The efficacy of bumetanide (oral liquid formulation 0.5 mg bid) as a treatment for the core symptoms of autism spectrum disorders in children and adolescents aged 7-17 years is being investigated in an international, randomised, double-blind, placebo-controlled phase III study. The primary endpoint is the change in Childhood Autism Rating Scale 2 (CARS2) total raw score after 6 months of treatment. At baseline, the 211 participants analysed are broadly representative of autistic subjects in this age range: mean (SD) age, 10.4 (3.0) years; 82.5% male; 47.7% with intelligence quotient ≥ 70. Mean CARS2 score was 40.1 (4.9) and mean Social Responsiveness Scale score was 116.7 (23.4). Final study results will provide data on efficacy and safety of bumetanide in autistic children and adolescents.
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Affiliation(s)
| | | | - Bozena Pietraszczyk-Kedziora
- Child and Adolescent Psychiatry Unit, Niepubliczny Zakład Opieki Zdrowotnej Gdańskie Centrum Zdrowia, Gdańsk, Poland
| | - Amaia Hervas
- Child and Adolescent Mental Health Unit, Hospital Universitari Mútua de Terrassa, and Global Institute of Neurodevelopment Integrated Care (IGAIN), Barcelona, Spain
| | - Stéphane Marret
- Department of Neonatal Pediatrics, Intensive Care, and Neuropediatrics, Rouen University Hospital and INSERM U 1245 Team 4 Neovasc, School of Medicine, Normandy University, Rouen, France
| | - Guiomar Oliveira
- Neurodevelopmental and Autism Unit From Child Developmental Center and Centro de Investigação e Formação Clínica, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Faculty of Medicine, University Clinic of Pediatrics, University of Coimbra, Coimbra, Portugal
| | - Antoine Rosier
- Department of Neonatal Pediatrics, CHU de Rouen and CHU le Rouvray, Sotteville les Rouen, France
| | - Véronique Crutel
- Neuro Inflammation Therapeutic Area, Institut de Recherches Internationales Servier, 50 Rue Carnot, 92284, Suresnes CEDEX, France
| | - Emmanuelle Besse
- Neuro Inflammation Therapeutic Area, Institut de Recherches Internationales Servier, 50 Rue Carnot, 92284, Suresnes CEDEX, France
| | - Cristina Albarrán Severo
- Neuro Inflammation Therapeutic Area, Institut de Recherches Internationales Servier, 50 Rue Carnot, 92284, Suresnes CEDEX, France.
| | | | - Joaquin Fuentes
- Child & Adolescent Psychiatry Service, Policlínica Gipuzkoa and Gipuzkoa Autism Society (GAUTENA), Donostia/San Sebastián, Spain
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Kochav-Lev M, Bennett-Back O, Lotan M, Stein-Zamir C. The Use of the Alberta Infant Motor Scale (AIMS) as a Diagnostic Scale for Infants with Autism. Diagnostics (Basel) 2023; 13:diagnostics13061045. [PMID: 36980353 PMCID: PMC10047290 DOI: 10.3390/diagnostics13061045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/12/2023] Open
Abstract
Autism spectrum disorder (ASD) is a group of developmental disabilities presenting difficulties in social interaction and language and an increased occurrence of cognitive, sensory, and motor gaps. Early intervention has been reported to improve the function of children with ASD. However, motor screening for children with ASD is difficult, as there are no specific tools for identifying this specific population. This study reports the results of using the Alberta Infant Motor Scale (AIMS), which assesses gross infant motor skills from ages 0 to 18 months, as a screening tool for detecting motor developmental delay (MDD) in small children with ASD. Methods: This retrospective cohort study included all children registered at one health care organization in Israel born between 2011 and 2017 (N = 240,299). Early childhood MDD was defined as having at least one recorded developmental physiotherapy (DPT) visit before the age of 2 years. Reasons for referral to DPT and the results of using AIMS as an appropriate tool for revealing developmental delays in infants with ASD are presented. Results: ASD diagnosis was reported in 1821 children (prevalence rate 0.75%). Of those, 388 (odds ratio 4.1, 95% CI 3.6–4.6) children were referred to DPT. Children with ASD mostly received DPT for motor delays (46.19%), torticollis (19.52%), developmental delay (15.48%), and preterm birth (7.38%). The use of AIMS as an early detection tool suggests that more than 87% of children with ASD and MDD present with a developmental delay or risk for one when using this scale. Conclusions: The prevalence of ASD among children referred to DPT for MDD is higher than its prevalence within the general population. The most common reasons for a child with ASD to be referred for DPT services are MMDs. AIMS was found to be a sensitive tool to pinpoint relevant candidates for ASD screening among children treated in DPT. Possible effects of the study: The use of AIMS as a relevant assessment scale for this group of clients is recommended. Training DPTs in identifying initial ASD signs and developing their clinical reasoning abilities will increase the chance of implementing early intervention with this group of clients.
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Affiliation(s)
- Mooly Kochav-Lev
- Child Development Institute, Meuhedet Health Services, Jerusalem 95464, Israel
- Correspondence:
| | - Odeya Bennett-Back
- Child Development Institute, Meuhedet Health Services, Jerusalem 95464, Israel
| | - Meir Lotan
- Department of Physiotherapy, Ariel University, Ariel 40700, Israel
| | - Chen Stein-Zamir
- Braun School of Public Health and Community Medicine, The Hebrew University, Jerusalem 91120, Israel
- Jerusalem District Health Office, Israel Ministry of Health, Jerusalem 9101002, Israel
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4
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Talantseva OI, Romanova RS, Shurdova EM, Dolgorukova TA, Sologub PS, Titova OS, Kleeva DF, Grigorenko EL. The global prevalence of autism spectrum disorder: A three-level meta-analysis. Front Psychiatry 2023; 14:1071181. [PMID: 36846240 PMCID: PMC9947250 DOI: 10.3389/fpsyt.2023.1071181] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 01/23/2023] [Indexed: 02/11/2023] Open
Abstract
UNLABELLED Autism spectrum disorder (ASD) is one the most disabling developmental disorders, imposing an extremely high economic burden. Obtaining as accurate prevalence estimates as possible is crucial to guide governments in planning policies for identification and intervention for individuals with ASD and their relatives. The precision of prevalence estimates can be heightened by summative analyses of the data collected around the world. To that end, we conducted a three-level mixed-effects meta-analysis. A systematic search of the Web of Science, PubMed, EMBASE, and PsycINFO databases from 2000 up to 13 July 2020 was performed, and reference lists of previous reviews and existing databases of prevalence studies were screened. Overall, 79 studies were included in the analysis of ASD and 59-in the analysis of previously existing relevant diagnoses: 30 for Autistic Disorder (AD), 15 for Asperger Syndrome (AS), and 14 for Atypical Autism (AA) and Pervasive Developmental Disorder - Not Otherwise Specified (PDD-NOS); these research reports covered the period from 1994 to 2019. Pooled prevalence estimates were 0.72% (95% CI = 0.61-0.85) for ASD, 0.25% (95% CI = 0.18-0.33) for AD, 0.13% (95% CI = 0.07-0.20) for AS, and 0.18% (95% CI = 0.10-0.28) for the combined group of AA and PDD-NOS. Estimates were higher (1) for the studies that used records-review surveillance rather than other designs; (2) in North America compared with other geographical regions; and (3) in high-income compared with lower-income countries. The highest prevalence estimates were registered in the USA. There was an increase in autism prevalence estimates over time. The prevalence was also significantly higher for children aged between 6 and 12 years compared to children under the age of 5 and over the age of 13 years. SYSTEMATIC REVIEW REGISTRATION https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42019131525, identifier CRD42019131525.
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Affiliation(s)
- Oksana I Talantseva
- Center for Cognitive Sciences, Sirius University of Science and Technology, Sirius, Russia.,Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Raisa S Romanova
- Center for Cognitive Sciences, Sirius University of Science and Technology, Sirius, Russia
| | - Ekaterina M Shurdova
- Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Tatiana A Dolgorukova
- Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Polina S Sologub
- Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Olga S Titova
- Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Daria F Kleeva
- Center for Bioelectric Interfaces, National Research University Higher School of Economics, Moscow, Russia
| | - Elena L Grigorenko
- Center for Cognitive Sciences, Sirius University of Science and Technology, Sirius, Russia.,Laboratory of Translational Developmental Sciences, Department of Psychology, Saint Petersburg State University, Saint Petersburg, Russia.,Department of Psychology, University of Houston, Houston, TX, United States.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States.,Child Study Center, Yale University, New Haven, CT, United States
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5
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Pervin M, Hagmayer Y. Attitudes Towards Evidence-Based Practice of Professionals Working with Children and Adolescents with Autism Spectrum Disorder in Bangladesh. ADMINISTRATION AND POLICY IN MENTAL HEALTH AND MENTAL HEALTH SERVICES RESEARCH 2022; 49:861-880. [PMID: 35773439 PMCID: PMC9393150 DOI: 10.1007/s10488-022-01205-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2022] [Indexed: 11/04/2022]
Abstract
Like in many lower-middle-income countries (LMIC), progress in implementing evidence-based practices (EBPs) for children with autism spectrum disorder (ASD) has been slow in Bangladesh. This cross-sectional study examined professionals' attitudes towards evidence-based practice (EBP) for children and adolescents with ASD and explored how providers' demographic factors are related to attitudes to and adoption of EBPs in Bangladesh. The sample consisted of 150 mental health professionals and special teachers from the urban area of Dhaka. Attitudes were assessed by the Evidence-based Practice Attitude Scale-36. Findings indicated that professionals have favorable attitudes towards EBP. Their attitudes varied depending on service settings (public clinical, private clinical, and special school) and caseload per year. Professionals who work in private and special school settings claimed to be more willing to adopt an EBP when required and perceived a higher fit of EBPs and their work than those in public clinical settings. The number of different EBPs used also differed by service setting. Every type of intervention (except medication) was used by more professionals in special schools than in private and public clinical settings. Many professionals reported few barriers to the implementation of EBPs. These findings indicate conditions that are often conducive to the implementation of EBPs. However, these results do not reflect the situation in rural areas, in which poverty is more widespread and the number of specialized professionals is low.
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Affiliation(s)
- Maleka Pervin
- Department of Psychology, University of Dhaka, Dhaka, Bangladesh
- Institute of Psychology, Georg August University of Göttingen, Göttingen, Germany
| | - York Hagmayer
- Institute of Psychology, Georg August University of Göttingen, Göttingen, Germany
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6
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Pervin M, Ahmed HU, Hagmayer Y. Effectiveness of interventions for children and adolescents with autism spectrum disorder in high-income vs. lower middle-income countries: An overview of systematic reviews and research papers from LMIC. Front Psychiatry 2022; 13:834783. [PMID: 35990045 PMCID: PMC9386527 DOI: 10.3389/fpsyt.2022.834783] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 07/11/2022] [Indexed: 12/21/2022] Open
Abstract
Background There is a multitude of systematic reviews of interventions for children and adolescents with autism spectrum disorder (ASD). However, most reviews seem to be based on research conducted in High-Income Countries (HIC). Thus, summary findings may not directly apply to Lower Middle-Income Countries (LMIC). Therefore, we conducted a Meta-Review analyzing systematic reviews on the effectiveness of interventions for target outcomes in children and adolescents with ASD to find out whether there are differences in effectiveness between HIC and LMIC and which interventions can be considered evidence-based in LMIC. Methods Electronic databases (PsycINFO, PubMed, Cochrane database of systematic reviews) were searched for reviews on interventions for ASD in children and adolescents from January 2011 through December 2021, which included studies not coming from HIC. Systematic reviews with qualitative and quantitative syntheses of findings were included. Two investigators independently assessed studies against predetermined inclusion/exclusion criteria and extracted relevant data including quality and evidence assessments. Evidence for different types of interventions in HIC vs. LMIC was planned to be compared, but none of the reviews assessed potential differences. Therefore, a narrative review of the studies from LMIC was conducted including an assessment of quality and evidence. Results Thirty-five reviews fulfilled the inclusion criteria. Eleven considered findings from HIC and LMIC. Sixty-nine percent included studies with various research designs; 63% provided a qualitative synthesis of findings; 77% percent assessed the quality of studies; 43% systematically assessed the level of evidence across studies. No review compared evidence from HIC and LMIC. A review of the studies from LMIC found some promising results, but the evidence was not sufficient due to a small number of studies, sometimes poor quality, and small sample sizes. Conclusion Systematic reviews on interventions for children and adolescents with ASD did not look for potential differences in the effectiveness of interventions in HIC and LMIC. Overall, there is very little evidence from LMIC. None of the interventions can be considered evidence-based in LMIC. Hence, additional research and mutually agreed methodological standards are needed to provide a more secure basis for evidence-based treatments in LMIC trying to establish evidence-based practices.
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Affiliation(s)
- Maleka Pervin
- Institute of Psychology, Georg August University of Goettingen, Göttingen, Germany
- Department of Psychology, University of Dhaka, Dhaka, Bangladesh
| | - Helal Uddin Ahmed
- Department of Child Adolescent and Family Psychiatry, National Institute of Mental Health, Dhaka, Bangladesh
| | - York Hagmayer
- Institute of Psychology, Georg August University of Goettingen, Göttingen, Germany
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7
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Salari N, Rasoulpoor S, Rasoulpoor S, Shohaimi S, Jafarpour S, Abdoli N, Khaledi-Paveh B, Mohammadi M. The global prevalence of autism spectrum disorder: a comprehensive systematic review and meta-analysis. Ital J Pediatr 2022; 48:112. [PMID: 35804408 PMCID: PMC9270782 DOI: 10.1186/s13052-022-01310-w] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 06/24/2022] [Indexed: 01/02/2023] Open
Abstract
Background Autism spectrum disorder (ASD) is one of the serious developmental disorders that is usually diagnosed below the age of three years. Although the severity of the disease’s symptoms varies from patient to patient, the ability to communicate with others is affected in all forms of ASD. This study aimed to determine the prevalence of ASD in high-risk groups by continent. Methods The present study was conducted by systematic review and meta-analysis from 2008 to July 2021. Databases such as Science Direct, PubMed, Scopus, SID, Magiran, Web of Science (WoS), and Google Scholar from 2008 to July 2021 were searched to find related studies. Data were analysed using Comprehensive Meta-Analysis software (Version 2). Results A total of 74 studies with 30,212,757 participants were included in this study. The prevalence of ASD in the world was 0.6% (95% confidence interval: 0.4–1%). Subgroup analyses indicated that the prevalence of ASD in Asia, America, Europe, Africa and Australia was 0.4% (95% CI: 0.1–1), 1% (95% CI: 0.8–1.1), 0.5% (95% CI: 0.2–1), 1% (95% CI: 0.3–3.1), 1.7% (95% CI: 0.5–6.1) respectively. Conclusion ASD imposes a heavy health burden on communities around the world. Early detection of ASD can reduce the incidence of developmental disorders and improve patients’ communication skills. Therefore, health policymakers need to be aware of the prevalence and increasing trend of ASD to implement appropriate planning and interventions to reduce its consequences.
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Affiliation(s)
- Nader Salari
- Department of Biostatistics, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shabnam Rasoulpoor
- Department of Psychiatric Nursing, School of Nursing and Midwifery, Urmia University of Medical Sciences, Urmia, Iran
| | - Shna Rasoulpoor
- Student research committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shamarina Shohaimi
- Department of Biology, Faculty of Science, University Putra Malaysia, Serdang, Selangor, Malaysia
| | - Sima Jafarpour
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nasrin Abdoli
- Department of Psychiatry, Substance Abuse Prevention Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Behnam Khaledi-Paveh
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Masoud Mohammadi
- Cellular and Molecular Research Center, Gerash University of Medical Sciences, Gerash, Iran.
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Zeidan J, Fombonne E, Scorah J, Ibrahim A, Durkin MS, Saxena S, Yusuf A, Shih A, Elsabbagh M. Global prevalence of autism: A systematic review update. Autism Res 2022; 15:778-790. [PMID: 35238171 PMCID: PMC9310578 DOI: 10.1002/aur.2696] [Citation(s) in RCA: 575] [Impact Index Per Article: 287.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 01/20/2023]
Abstract
Prevalence estimates of autism are essential for informing public policy, raising awareness, and developing research priorities. Using a systematic review, we synthesized estimates of the prevalence of autism worldwide. We examined factors accounting for variability in estimates and critically reviewed evidence relevant for hypotheses about biological or social determinants (viz., biological sex, sociodemographic status, ethnicity/race, and nativity) potentially modifying prevalence estimates of autism. We performed the search in November 2021 within Medline for studies estimating autism prevalence, published since our last systematic review in 2012. Data were extracted by two independent researchers. Since 2012, 99 estimates from 71 studies were published indicating a global autism prevalence that ranges within and across regions, with a median prevalence of 100/10,000 (range: 1.09/10,000 to 436.0/10,000). The median male‐to‐female ratio was 4.2. The median percentage of autism cases with co‐occurring intellectual disability was 33.0%. Estimates varied, likely reflecting complex and dynamic interactions between patterns of community awareness, service capacity, help seeking, and sociodemographic factors. A limitation of this review is that synthesizing methodological features precludes a quality appraisal of studies. Our findings reveal an increase in measured autism prevalence globally, reflecting the combined effects of multiple factors including the increase in community awareness and public health response globally, progress in case identification and definition, and an increase in community capacity. Hypotheses linking factors that increase the likelihood of developing autism with variations in prevalence will require research with large, representative samples and comparable autism diagnostic criteria and case‐finding methods in diverse world regions over time.
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Affiliation(s)
- Jinan Zeidan
- Montreal Neurological Institute-Hospital, Faculty of Medicine & Health Sciences, McGill University Montreal, Montreal, Canada
| | - Eric Fombonne
- Department of Psychiatry, Oregon Health and Science University, Portland, Oregon, USA
| | - Julie Scorah
- Montreal Neurological Institute-Hospital, Faculty of Medicine & Health Sciences, McGill University Montreal, Montreal, Canada
| | - Alaa Ibrahim
- Montreal Neurological Institute-Hospital, Faculty of Medicine & Health Sciences, McGill University Montreal, Montreal, Canada
| | - Maureen S Durkin
- Population Health Sciences, Department of Pediatrics, Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Shekhar Saxena
- Department of Global Health and Population, Harvard T H Chan School of Public Health, Boston, Massachusetts, USA
| | - Afiqah Yusuf
- Montreal Neurological Institute-Hospital, Faculty of Medicine & Health Sciences, McGill University Montreal, Montreal, Canada
| | - Andy Shih
- Autism Speaks, New York City, New York, USA
| | - Mayada Elsabbagh
- Montreal Neurological Institute-Hospital, Faculty of Medicine & Health Sciences, McGill University Montreal, Montreal, Canada
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9
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An ethologic approach to differential diagnosis of autism in toddlers. ETHOL ECOL EVOL 2022. [DOI: 10.1080/03949370.2021.1907789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Zappella M. Autism: a diagnostic dilemma. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:71-76. [DOI: 10.17116/jnevro202212206171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bougeard C, Picarel-Blanchot F, Schmid R, Campbell R, Buitelaar J. Prevalence of Autism Spectrum Disorder and Co-morbidities in Children and Adolescents: A Systematic Literature Review. Front Psychiatry 2021; 12:744709. [PMID: 34777048 PMCID: PMC8579007 DOI: 10.3389/fpsyt.2021.744709] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/27/2021] [Indexed: 11/21/2022] Open
Abstract
Objective: Individuals with autism spectrum disorder often present somatic and/or psychiatric co-morbid disorders. The DSM-5 allows for consideration of additional diagnoses besides ASD and may have impacted the prevalence of co-morbidities as well as being limited in capturing the true differences in prevalence observed between males and females. We describe the prevalence of ASD and frequently observed co-morbidities in children and adolescents (<18 years) in the United States and five European countries. Methods: Two systematic literature reviews were conducted in PubMed and Embase for the period 2014-2019 and focusing on the prevalence of ASD and nine co-morbidities of interest based on their frequency and/or severity: Attention Deficit Hyperactivity Disorder (ADHD), anxiety, depressive disorders, epilepsy, intellectual disability (ID), sleep disorders, sight/hearing impairment/loss, and gastro-intestinal syndromes (GI). Results: Thirteen studies on prevalence of ASD and 33 on prevalence of co-morbidities were included. Prevalence of ASD was 1.70 and 1.85% in US children aged 4 and 8 years respectively, while prevalence in Europe ranged between 0.38 and 1.55%. Additionally, current evidence is supportive of a global increase in ASD prevalence over the past years. Substantial heterogeneity in prevalence of co-morbidities was observed: ADHD (0.00-86.00%), anxiety (0.00-82.20%), depressive disorders (0.00-74.80%), epilepsy (2.80-77.50%), ID (0.00-91.70%), sleep disorders (2.08-72.50%), sight/hearing impairment/loss (0.00-14.90%/0.00-4.90%), and GI syndromes (0.00-67.80%). Studies were heterogeneous in terms of design and method to estimate prevalence. Gender appears to represent a risk factor for co-morbid ADHD (higher in males) and epilepsy/seizure (higher in females) while age is also associated with ADHD and anxiety (increasing until adolescence). Conclusion: Our results provide a descriptive review of the prevalence of ASD and its co-morbidities in children and adolescents. These insights can be valuable for clinicians and parents/guardians of autistic children. Prevalence of ASD has increased over time while co-morbidities bring additional heterogeneity to the clinical presentation, which further advocates for personalized approaches to treatment and support. Having a clear understanding of the prevalence of ASD and its co-morbidities is important to raise awareness among stakeholders.
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Affiliation(s)
| | | | | | | | - Jan Buitelaar
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, Netherlands
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13
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Tunesi S, Bosio M, Russo AG. Do autistic patients change healthcare services utilisation through the transition age? An Italian longitudinal retrospective study. BMJ Open 2019; 9:e030844. [PMID: 31727653 PMCID: PMC6886997 DOI: 10.1136/bmjopen-2019-030844] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES This paper aims to provide an estimate of the prevalence rate of autism spectrum disorder (ASD) in 8-year-olds in 2017 based on administrative databases and to investigate the change in healthcare service use during the healthcare transition age of 18. DESIGN This research is based on a longitudinal retrospective cohort study. SETTING The data is drawn from the Italian Administrative Healthcare Database (2010-2017). PARTICIPANTS We identified 5607 ASD patients; 331 ASD patients from 2012 to 2015 in the calendar year of their 18th birthday were selected and their health service utilisation during a 5-year period-ranging from 2 years preceding and succeeding their 18th year-were investigated. INTERVENTIONS None. PRIMARY AND SECONDARY OUTCOME MEASURES Prevalence, incidence and proportion of ASD patients receiving specific healthcare services were included in the outcome measures. RESULTS Prevalence of ASD at age 8 was 5.4/1000. Global access to health and social services was lower both before and after age 18 (46.5% at 16; 68.0% at 18; 54.1% at 20). The percentage of patients receiving a neuropsychiatric consultation decreased after age 18 (30.8% at 18; 5.4% at 20). Community mental health services (CMHS) utilisation rate increased above 18 years of age. Regarding psychiatric visits, for both outpatient and CMHS, an increase was observed from 17.8% at age 18 to 25.4% at age 20. The utilisation of rehabilitation services decreased with age, dropping from 17.8% at age 16 to 1.8% at age 20. Psychiatric outpatient services remained stable across ages at about 14%. CONCLUSION Our findings suggest that ASD patients changed clinical reference services with age from neuropsychiatric and rehabilitative services towards psychiatric and community-based services as they transitioned from paediatric to adult healthcare services.
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Affiliation(s)
- Sara Tunesi
- Epidemiology Unit, Agency for Health Protection of Milan, Milan, Italy
| | - Marco Bosio
- Agency for Health Protection of Milan, Milan, Italy
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14
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Strunecka A, Strunecky O. Chronic Fluoride Exposure and the Risk of Autism Spectrum Disorder. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E3431. [PMID: 31527457 PMCID: PMC6765894 DOI: 10.3390/ijerph16183431] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/07/2019] [Accepted: 09/12/2019] [Indexed: 12/20/2022]
Abstract
The continuous rise of autism spectrum disorder (ASD) prevalent in the past few decades is causing an increase in public health and socioeconomic concern. A consensus suggests the involvement of both genetic and environmental factors in the ASD etiopathogenesis. Fluoride (F) is rarely recognized among the environmental risk factors of ASD, since the neurotoxic effects of F are not generally accepted. Our review aims to provide evidence of F neurotoxicity. We assess the risk of chronic F exposure in the ASD etiopathology and investigate the role of metabolic and mitochondrial dysfunction, oxidative stress and inflammation, immunoexcitotoxicity, and decreased melatonin levels. These symptoms have been observed both after chronic F exposure as well as in ASD. Moreover, we show that F in synergistic interactions with aluminum's free metal cation (Al3+) can reinforce the pathological symptoms of ASD. This reinforcement takes place at concentrations several times lower than when acting alone. A high ASD prevalence has been reported from countries with water fluoridation as well as from endemic fluorosis areas. We suggest focusing the ASD prevention on the reduction of the F and Al3+ burdens from daily life.
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Affiliation(s)
- Anna Strunecka
- The Institute of Technology and Business, Okružní 517/10, 370 01 České Budějovice, Czech Republic.
| | - Otakar Strunecky
- The Institute of Technology and Business, Okružní 517/10, 370 01 České Budějovice, Czech Republic.
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Morales-Hidalgo P, Roigé-Castellví J, Hernández-Martínez C, Voltas N, Canals J. Prevalence and Characteristics of Autism Spectrum Disorder Among Spanish School-Age Children. J Autism Dev Disord 2019; 48:3176-3190. [PMID: 29696527 DOI: 10.1007/s10803-018-3581-2] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The present study aims to assess the prevalence of autism spectrum disorder (ASD) in preschool and school-age children following a two-phase procedure. The screening phase was performed on a sample of 5555 children taking into account parent and teacher information. The individual assessment included the ADI-R, ADOS-2 and Wechsler scales. The estimated prevalence was 1.55% in preschoolers and 1.00% in school-age children. Between 1.84 and 2.59% of the children exhibited subclinical diagnosis. The male-to-female ratio was around 4:1. Most of the children exhibited mild and moderate nuclear symptoms, and the girls showed less severe communication problems. Previous diagnosis was found in 62-71% of the children. Prevalence estimates are close to the 1% international ratings and much higher than previous national reports suggested.
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Affiliation(s)
- Paula Morales-Hidalgo
- Department of Psychology, Nutrition and Mental Health Research Group (NUTRISAM), Research Center for Behavioral Assessment (CRAMC), Universitat Rovira i Virgili, Ctra. Valls s/n, 43007, Tarragona, Spain
| | - Joana Roigé-Castellví
- Department of Psychology, Nutrition and Mental Health Research Group (NUTRISAM), Research Center for Behavioral Assessment (CRAMC), Universitat Rovira i Virgili, Ctra. Valls s/n, 43007, Tarragona, Spain
| | - Carmen Hernández-Martínez
- Department of Psychology, Nutrition and Mental Health Research Group (NUTRISAM), Research Center for Behavioral Assessment (CRAMC), Universitat Rovira i Virgili, Ctra. Valls s/n, 43007, Tarragona, Spain
| | - Núria Voltas
- Department of Psychology, Nutrition and Mental Health Research Group (NUTRISAM), Research Center for Behavioral Assessment (CRAMC), Universitat Rovira i Virgili, Ctra. Valls s/n, 43007, Tarragona, Spain
| | - Josefa Canals
- Department of Psychology, Nutrition and Mental Health Research Group (NUTRISAM), Research Center for Behavioral Assessment (CRAMC), Universitat Rovira i Virgili, Ctra. Valls s/n, 43007, Tarragona, Spain.
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16
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Pérez-Crespo L, Prats-Uribe A, Tobias A, Duran-Tauleria E, Coronado R, Hervás A, Guxens M. Temporal and Geographical Variability of Prevalence and Incidence of Autism Spectrum Disorder Diagnoses in Children in Catalonia, Spain. Autism Res 2019; 12:1693-1705. [PMID: 31317678 PMCID: PMC6900126 DOI: 10.1002/aur.2172] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/16/2022]
Abstract
This study aims to estimate the prevalence of autism spectrum disorders (ASD) in 2017 and the ASD diagnosis incidence between 2009 and 2017 in children living in Catalonia region in Spain, and their temporal and geographical variability. We used administrative data for all children aged 2–17 years who were insured in the public Catalan Health System between 2009 and 2017. We identified all ASD cases diagnosed between 2009 and 2017 (ICD‐9 codes 299.0, 299.1, 299.8, and 299.9). We estimated the ASD prevalence in 2017 and the overall annual incidence between 2009 and 2017, then stratified by sex, age group, and healthcare area. We used Poisson regression models to assess temporal trends in the incidence and mixed‐effects Poisson regression models to assess geographical variability. We observed an ASD prevalence of 1.23% (95% confidence interval [CI] 1.21–1.25) in 2017, with 1.95% (95% CI 1.92–1.99) for boys and 0.46% (95% CI 0.44–0.48) for girls, the highest prevalence being in 11‐ to 17‐year‐olds (1.80%, 95% CI 1.76–1.83). The ASD diagnosis incidence increased from 0.07% (95% CI 0.06–0.09) in 2009 to 0.23% (95% CI 0.21–0.24) in 2017, with a higher increase in girls, and in children aged 2–5 years at the time of diagnosis. We only observed geographical differences in prevalence in the 2017 data. We also detected a threefold increase in the diagnosis incidence overall, which was even more pronounced in girls and at early ages. In conclusion, the ASD prevalence observed in this study was 1.23% in 2017, with a sex ratio of 4.5 in favor of boys, which is consistent with previous studies. Autism Res2019. © 2019 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Autism spectrum disorders (ASD) are currently well known in our society as one of the most common neurodevelopmental disorders during childhood. The results of our study showed that, in 2017 in Catalonia, slightly more than one in a 100 children had an ASD diagnosis, it was more common in boys than in girls, and also in older children. In addition, between 2009 and 2017, we observed an increase in the number of new cases diagnosed each year. The data presented in this study will assist in planning and evaluating the needs of health services in this geographical region.
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Affiliation(s)
- Laura Pérez-Crespo
- ISGlobal, Barcelona, Spain.,Pompeu Fabra University, Barcelona, Spain.,Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain
| | - Albert Prats-Uribe
- Preventive Medicine and Public Health Training Unit, Parc de Salut Mar-Pompeu, Fabra University-Public Health Agency of Barcelona, Barcelona, Spain.,Centre for Statistics in Medicine, Botnar Research Centre, NDORMS, University of Oxford, Oxford, UK
| | - Aurelio Tobias
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), Barcelona, Spain
| | - Enric Duran-Tauleria
- Institut Global d'Atenció Integral del Neurodesenvolupament (IGAIN), Barcelona, Spain
| | - Ricard Coronado
- Hospital General de Granollers, Granollers, Spain.,Department of Pediatrics, Obstetrics and Gynecology and Preventive Medicine and Public Health, Autonomous University of Barcelona, Barcelona, Spain
| | - Amaia Hervás
- Institut Global d'Atenció Integral del Neurodesenvolupament (IGAIN), Barcelona, Spain.,Child and Adolescent Mental Health Unit, Hospital Universitari Mútua de Terrassa, Barcelona, Spain
| | - Mònica Guxens
- ISGlobal, Barcelona, Spain.,Pompeu Fabra University, Barcelona, Spain.,Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, The Netherlands
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17
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Makushkin EV, Makarov IV, Pashkovskiy VE. [The prevalence of autism: genuine and imaginary]. Zh Nevrol Psikhiatr Im S S Korsakova 2019; 119:80-86. [PMID: 30874532 DOI: 10.17116/jnevro201911902180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this review, the authors analyze the causes of the high prevalence of autism spectrum disorders (ASD) in recent decades. It is shown that the expansion of the boundaries of the 'autistic spectrum' concept led to a significant spread of data on its prevalence, depending on the time, diagnostic criteria, country and region. Stability of the diagnosis of ASD is not high and depends on the age of the child. Diagnostic practice in comorbid psychiatric disorders unfairly shifted toward ASD. At the same time, the hypothesis on the uniqueness of autistic manifestations in infancy is not convincingly confirmed. The practical aspect of the problem of the epidemiology of autism does not exclude, but on the contrary, presupposes early detection of nonspecific mental disorders followed by medical-psychological-pedagogical correction.
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Affiliation(s)
- E V Makushkin
- Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia
| | - I V Makarov
- Bekhterev National Research Medical Center for Psychiatry and Neurology, St. Petersburg, Russia; Mechnikov North-Western State Medical University, St. Petersburg, Russia
| | - V E Pashkovskiy
- Mechnikov North-Western State Medical University, St. Petersburg, Russia
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18
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Simashkova NV, Boksha IS, Klyushnik TP, Iakupova LP, Ivanov MV, Mukaetova-Ladinska EB. Diagnosis and Management of Autism Spectrum Disorders in Russia: Clinical–Biological Approaches. J Autism Dev Disord 2019; 49:3906-3914. [DOI: 10.1007/s10803-019-04071-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Pejovic-Milovancevic M, Kesic A, Grujicic R, Stojkovic A, Zivotic S, Stupar D, Borovnica V, Radosavljev-Kircanski J, Manojlovic I, Stojiljkovic DJ. Inpatient care in Serbia: trends in hospitalization and diagnostics over time. Eur Child Adolesc Psychiatry 2018; 27:1645-1651. [PMID: 29992352 DOI: 10.1007/s00787-018-1191-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Milica Pejovic-Milovancevic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia. .,Institute of Mental Health, Belgrade, Serbia.
| | - Ana Kesic
- Clinic of Neurology and Psychiatry for Children and Adolescents, Belgrade, Serbia
| | | | - Ana Stojkovic
- Faculty of Philosophy, University of Belgrade, Belgrade, Serbia
| | - Sanja Zivotic
- Hospital for Psychiatry, Clinical Centre "D Dragisa Misovic", Belgrade, Serbia
| | - Dusan Stupar
- Clinic of Neurology and Psychiatry for Children and Adolescents, Belgrade, Serbia
| | - Vladimir Borovnica
- Hospital for Psychiatry, Clinical Centre "D Dragisa Misovic", Belgrade, Serbia
| | | | - Iva Manojlovic
- Clinic of Neurology and Psychiatry for Children and Adolescents, Belgrade, Serbia
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Prevalence of Autism Spectrum Disorder in a large Italian catchment area: a school-based population study within the ASDEU project. Epidemiol Psychiatr Sci 2018; 29:e5. [PMID: 30187843 PMCID: PMC8061252 DOI: 10.1017/s2045796018000483] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
AIMS This study aims to estimate Autism Spectrum Disorders (ASD) prevalence in school-aged children in the province of Pisa (Italy) using the strategy of the ASD in the European Union (ASDEU) project. METHODS A multistage approach was used to identify cases in a community sample (N = 10 138) of 7-9-year-old children attending elementary schools in Pisa - Italy. First, the number of children with a disability certificate was collected from the Local Health Authority and an ASD diagnosis was verified by the ASDEU team. Second, a Teacher Nomination form (TN) to identify children at risk for ASD was filled in by teachers who joined the study and the Social Communication Questionnaire (SCQ) was filled in by the parents of children identified as positive by the TN; a comprehensive assessment, which included the Autism Diagnostic Observation Schedule-Second Edition, was performed for children with positive TN and SCQ⩾9. RESULTS A total of 81 children who had a disability certificate also had ASD (prevalence: 0.79%, i.e. 1/126). Specifically, 66 children (57 males and nine females; 62% with intellectual disability -ID-) were certified with ASD, whereas another 15 (11 males and four females; 80% with ID) were recognised as having ASD among those certified with another neurodevelopmental disorder. Considering the population of 4417 (children belonging to schools which agreed to participate in the TN/SCQ procedure) and using only the number of children certified with ASD, the prevalence (38 in 4417) was 0.86%, i.e. one in 116. As far as this population is concerned, the prevalence rises to 1% if we consider the eight new cases (six males and two females; no subject had ID) identified among children with no pre-existing diagnoses and to 1.15%, i.e., one in 87, if probabilistic estimation is used. CONCLUSIONS This is the first population-based ASD prevalence study conducted in Italy so far and its results indicate a prevalence of ASD in children aged 7-9 years of about one in 87. This finding may help regional, national and international health planners to improve ASD policies for ASD children and their families in the public healthcare system.
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21
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Olliac B, Crespin G, Laznik MC, Cherif Idrissi El Ganouni O, Sarradet JL, Bauby C, Dandres AM, Ruiz E, Bursztejn C, Xavier J, Falissard B, Bodeau N, Cohen D, Saint-Georges C. Infant and dyadic assessment in early community-based screening for autism spectrum disorder with the PREAUT grid. PLoS One 2017; 12:e0188831. [PMID: 29216234 PMCID: PMC5720624 DOI: 10.1371/journal.pone.0188831] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/14/2017] [Indexed: 12/04/2022] Open
Abstract
Background The need for early treatment of autism spectrum disorders (ASD) necessitates early screening. Very few tools have been prospectively tested with infants of less than 12 months of age. The PREAUT grid is based on dyadic assessment through interaction and shared emotion and showed good metrics for predicting ASD in very-high-risk infants with West syndrome. Methods We assessed the ability of the PREAUT grid to predict ASD in low-risk individuals by prospectively following and screening 12,179 infants with the PREAUT grid at four (PREAUT-4) and nine (PREAUT-9) months of age. A sample of 4,835 toddlers completed the Checklist for Autism in Toddlers (CHAT) at 24 months (CHAT-24) of age. Children who were positive at one screening (N = 100) were proposed a clinical assessment (including the Children Autism Rating Scale, a Developmental Quotient, and an ICD-10-based clinical diagnosis if appropriate) in the third year of life. A randomly selected sample of 1,100 individuals who were negative at all screenings was followed by the PMI team from three to five years of age to identify prospective false negative cases. The clinical outcome was available for 45% (N = 45) of positive children and 52.6% (N = 579) of negative children. Results Of the 100 children who screened positive, 45 received a diagnosis at follow-up. Among those receiving a diagnosis, 22 were healthy, 10 were diagnosed with ASD, seven with intellectual disability (ID), and six had another developmental disorder. Thus, 50% of infants positive at one screening subsequently received a neurodevelopmental diagnosis. The PREAUT grid scores were significantly associated with medium and high ASD risk status on the CHAT at 24 months (odds ratio of 12.1 (95%CI: 3.0–36.8), p < 0.001, at four months and 38.1 (95%CI: 3.65–220.3), p < 0.001, at nine months). Sensitivity (Se), specificity, negative predictive values, and positive predictive values (PPVs) for PREAUT at four or nine months, and CHAT at 24 months, were similar [PREAUT-4: Se = 16.0 to 20.6%, PPV = 25.4 to 26.3%; PREAUT-9: Se = 30.5 to 41.2%, PPV = 20.2 to 36.4%; and CHAT-24: Se = 33.9 to 41.5%, PPV = 27.3 to 25.9%]. The repeated use of the screening instruments increased the Se but not PPV estimates [PREAUT and CHAT combined: Se = 67.9 to 77.7%, PPV = 19.0 to 28.0%]. Conclusions The PREAUT grid can contribute to very early detection of ASD and its combination with the CHAT may improve the early diagnosis of ASD and other neurodevelopmental disorders.
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Affiliation(s)
- Bertrand Olliac
- Department of Child and Adolescent Psychiatry, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
- Department of Child and Adolescent Psychiatry, Centre Hospitalier Esquirol, Limoges, France
- Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1094, Tropical Neuroepidemiology, Limoges, France
| | - Graciela Crespin
- PREAUT Association Programme de Recherche et d’Etudes sur l’Autisme, Paris, France
| | - Marie-Christine Laznik
- Department of Child and Adolescent Psychiatry, Association Santé Mentale du 13ème, Paris, France
| | | | - Jean-Louis Sarradet
- PREAUT Association Programme de Recherche et d’Etudes sur l’Autisme, Paris, France
| | - Colette Bauby
- PREAUT Association Programme de Recherche et d’Etudes sur l’Autisme, Paris, France
- PMI Center (Center for Protection of Mother and Infant), Paris, France
| | - Anne-Marie Dandres
- PREAUT Association Programme de Recherche et d’Etudes sur l’Autisme, Paris, France
- PMI Center (Center for Protection of Mother and Infant), Paris, France
| | - Emeline Ruiz
- PREAUT Association Programme de Recherche et d’Etudes sur l’Autisme, Paris, France
| | - Claude Bursztejn
- Department of Child and Adolescent Psychiatry, Strasbourg University Hospital, Strasbourg, France
| | - Jean Xavier
- Department of Child and Adolescent Psychiatry, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
- ISIR, CNRS, UMR 7222, UMPC, Paris, France
| | - Bruno Falissard
- INSERM U669, Université Paris-Sud and Université Paris-Descartes, Paris, France
| | - Nicolas Bodeau
- Department of Child and Adolescent Psychiatry, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - David Cohen
- Department of Child and Adolescent Psychiatry, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
- ISIR, CNRS, UMR 7222, UMPC, Paris, France
| | - Catherine Saint-Georges
- Department of Child and Adolescent Psychiatry, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
- ISIR, CNRS, UMR 7222, UMPC, Paris, France
- Association CEREP-PHYMENTIN, Paris, France
- * E-mail:
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A review of prevalence studies of Autism Spectrum Disorder by latitude and solar irradiance impact. Med Hypotheses 2017; 109:19-24. [PMID: 29150285 DOI: 10.1016/j.mehy.2017.09.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/07/2017] [Accepted: 09/15/2017] [Indexed: 12/20/2022]
Abstract
Autism Spectrum Disorder (ASD) is a lifelong disability with no known cause or cure. Among the suggested etiologies, is Cannell's hypothesis of a deficiency in Vitamin D the main natural source of which is Solar Ultraviolet-B (UVB) radiation. The aim in this paper is to build on this hypothesis and explore the relationship of solar irradiance of which UVB is a component, by latitude with the prevalence rates of ASD. Twenty-five reports published between 2011 and 2016 using comparable diagnostic criteria were reviewed. The results suggest a tendency for the prevalence rates of ASD to be lowest in countries near the equator and for this rate to increase as the latitude increases. These findings provide some support not just for the Vitamin D hypothesis, but also for a new proposition that along with UVB radiation, the entire solar radiation spectrum which reaches the earth, may play a role in ASD. While these results are both novel and encouraging in terms of the potential efficacy of exposure to natural sunlight, further research is warranted before results can be considered definitive, and before the implications of the findings can be implemented clinically.
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Delobel-Ayoub M, Klapouszczak D, van Bakel MME, Horridge K, Sigurdardottir S, Himmelmann K, Arnaud C. Prevalence and characteristics of autism spectrum disorders in children with cerebral palsy. Dev Med Child Neurol 2017; 59:738-742. [PMID: 28439889 DOI: 10.1111/dmcn.13436] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/20/2017] [Indexed: 01/26/2023]
Abstract
AIM To evaluate the prevalence of co-occurring autism spectrum disorders (ASDs) among children with cerebral palsy (CP), and to describe their characteristics. METHOD The data of 1225 CP cases from four population-based registers (Iceland, Sweden, and two in France) and one population-based surveillance programme (North East England, UK) participating in the Surveillance of Cerebral Palsy in Europe Network (SCPE) were analysed. The ASD diagnoses were systematically recorded using category F84 of the International Classification of Diseases, 10th Revision. The registers provided data on children born between 1995 and 2006, while the cross-sectional survey in the UK concerned children aged 0 to 19 years, registered in 2010. RESULTS Among the children with CP, 107 had an associated diagnosis of ASD - i.e., 8.7% of the study population (95% confidence interval 7.2-10.5). This proportion varied across centres from 4.0% to 16.7% but was independent of CP prevalence. Male sex, co-occurring epilepsy, intellectual disability, and better walking ability were associated with the coexistence of ASD. INTERPRETATION Our findings support the need for a multidisciplinary approach to management of children with CP to adequately identify and address all facets of presentation, including ASD.
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Affiliation(s)
- Malika Delobel-Ayoub
- Inserm UMR 1027, Toulouse, France.,Université de Toulouse III, Toulouse, France.,CHU Toulouse, Registre des Handicaps de l'Enfant en Haute-Garonne, Toulouse, France
| | - Dana Klapouszczak
- Inserm UMR 1027, Toulouse, France.,Université de Toulouse III, Toulouse, France.,CHU Toulouse, Registre des Handicaps de l'Enfant en Haute-Garonne, Toulouse, France
| | | | - Karen Horridge
- Paediatric Disability Department, Sunderland Royal Hospital, Sunderland, UK
| | | | - Kate Himmelmann
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Catherine Arnaud
- Inserm UMR 1027, Toulouse, France.,Université de Toulouse III, Toulouse, France.,CHU Toulouse, Registre des Handicaps de l'Enfant en Haute-Garonne, Toulouse, France
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24
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Bachmann CJ, Gerste B, Hoffmann F. Diagnoses of autism spectrum disorders in Germany: Time trends in administrative prevalence and diagnostic stability. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2016; 22:283-290. [PMID: 29671642 DOI: 10.1177/1362361316673977] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
For Germany, no data on trends in autism spectrum disorder diagnoses are available. The primary aim of this study was to establish the time trends in the administrative prevalence of autism spectrum disorder diagnoses. The second aim was to assess the stability of autism spectrum disorder diagnoses over time. We analysed administrative outpatient data (2006-2012) from a nationwide health insurance fund and calculated the prevalence of autism spectrum disorder diagnoses for each year, stratified by age and sex. Additionally, we studied a cohort with a first-time diagnosis of autism spectrum disorder in 2007 through 2012, investigating the percentage of retained autism spectrum disorder diagnoses. From 2006 to 2012, the prevalence of autism spectrum disorder diagnoses in 0- to 24-year-olds increased from 0.22% to 0.38%. In insurees with a first-time autism spectrum disorder diagnosis in 2007, this diagnosis was carried on in all years through 2012 in 33.0% (The International Classification of Diseases, Tenth Revision diagnoses: F84.0/F84.1/F84.5) and 11.2% (F84.8/F84.9), respectively. In Germany, like in other countries, there has been an increase in the administrative prevalence of autism spectrum disorder diagnoses. Yet, prevalences are still lower than in some other Western countries. The marked percentage of autism spectrum disorder diagnoses which were not retained could indicate a significant portion of autism spectrum disorder misdiagnoses, which might contribute to rising autism spectrum disorder prevalences.
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Affiliation(s)
| | | | - Falk Hoffmann
- 3 Carl von Ossietzky University of Oldenburg, Germany
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25
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Diémé B, Mavel S, Blasco H, Tripi G, Bonnet-Brilhault F, Malvy J, Bocca C, Andres CR, Nadal-Desbarats L, Emond P. Metabolomics Study of Urine in Autism Spectrum Disorders Using a Multiplatform Analytical Methodology. J Proteome Res 2015; 14:5273-82. [PMID: 26538324 DOI: 10.1021/acs.jproteome.5b00699] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with no clinical biomarker. The aims of this study were to characterize a metabolic signature of ASD and to evaluate multiplatform analytical methodologies in order to develop predictive tools for diagnosis and disease follow-up. Urine samples were analyzed using (1)H and (1)H-(13)C NMR-based approaches and LC-HRMS-based approaches (ESI+ and ESI- on HILIC and C18 chromatography columns). Data tables obtained from the six analytical modalities on a training set of 46 urine samples (22 autistic children and 24 controls) were processed by multivariate analysis (orthogonal partial least-squares discriminant analysis, OPLS-DA). The predictions from each of these OPLS-DA models were then evaluated using a prediction set of 16 samples (8 autistic children and 8 controls) and receiver operating characteristic curves. Thereafter, a data fusion block-scaling OPLS-DA model was generated from the 6 best models obtained for each modality. This fused OPLS-DA model showed an enhanced performance (R(2)Y(cum) = 0.88, Q(2)(cum) = 0.75) compared to each analytical modality model, as well as a better predictive capacity (AUC = 0.91, p-value = 0.006). Metabolites that are most significantly different between autistic and control children (p < 0.05) are indoxyl sulfate, N-α-acetyl-l-arginine, methyl guanidine, and phenylacetylglutamine. This multimodality approach has the potential to contribute to find robust biomarkers and characterize a metabolic phenotype of the ASD population.
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Affiliation(s)
- Binta Diémé
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France
| | - Sylvie Mavel
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France
| | - Hélène Blasco
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France.,Service de Biochimie Et Biologie Moléculaire, Centre Hospitalier Régional Universitaire (CHRU) de Tours , 37044 Tours, France
| | - Gabriele Tripi
- Service de Pédopsychiatrie, CHRU de Tours , 37044 Tours, France
| | - Frédérique Bonnet-Brilhault
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France.,Service de Pédopsychiatrie, CHRU de Tours , 37044 Tours, France
| | - Joëlle Malvy
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France.,Service de Pédopsychiatrie, CHRU de Tours , 37044 Tours, France
| | - Cinzia Bocca
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France
| | - Christian R Andres
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France.,Service de Biochimie Et Biologie Moléculaire, Centre Hospitalier Régional Universitaire (CHRU) de Tours , 37044 Tours, France
| | - Lydie Nadal-Desbarats
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France
| | - Patrick Emond
- INSERM U930, Imagerie et Cerveau, Université François-Rabelais , 37000 Tours, France.,Service de Biochimie Et Biologie Moléculaire, Centre Hospitalier Régional Universitaire (CHRU) de Tours , 37044 Tours, France.,Service de Médecine Nucléaire In Vitro, CHRU de Tours , 37044 Tours, France
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26
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Socioeconomic Disparities and Prevalence of Autism Spectrum Disorders and Intellectual Disability. PLoS One 2015; 10:e0141964. [PMID: 26540408 PMCID: PMC4635003 DOI: 10.1371/journal.pone.0141964] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 10/15/2015] [Indexed: 12/17/2022] Open
Abstract
Background and Objectives Study of the impact of socioeconomic status on autism spectrum disorders (ASD) and severe intellectual disabilities (ID) has yielded conflicting results. Recent European studies suggested that, unlike reports from the United States, low socioeconomic status is associated with an increased risk of ASD. For intellectual disabilities, the links with socioeconomic status vary according to the severity. We wished to clarify the links between socioeconomic status and the prevalence of ASD (with or without ID) and isolated severe ID. Methods 500 children with ASD and 245 children with severe ID (IQ <50) aged 8 years, born 1995 to 2004, were recruited from a French population-based registry. Inclusions were based on clinical diagnoses reported in medical records according to the International Classification of Diseases, 10th Revision. Socioeconomic status was measured by indicators available at block census level which characterize the population of the child’s area of residence. Measures of deprivation, employment, occupation, education, immigration and family structure were used. Prevalences were compared between groups of census units defined by the tertiles of socioeconomic level in the general population. Results Prevalence of ASD with associated ID was higher in areas with the highest level of deprivation and the highest percentage of unemployed adults, persons with no diploma, immigrants and single-parent families. No association was found when using occupational class. Regarding ASD without associated ID, a higher prevalence was found in areas with the highest percentage of immigrants. No association was found for other socioeconomic indicators. The prevalence of isolated severe ID was likely to be higher in the most disadvantaged groups defined by all indicators. Conclusion The prevalence of ASD with associated ID and of severe isolated ID is more likely to be higher in areas with the highest level of deprivation.
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