Diagnosis of Autism Spectrum Disorder According to Maternal-Race Ethnicity and Country of Birth: A Register-Based Study / Ifrah ABDULLAHI in Journal of Autism and Developmental Disorders, 49-9 (September 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-9 (September 2019) . - p.3611-3624 Titre : Diagnosis of Autism Spectrum Disorder According to Maternal-Race Ethnicity and Country of Birth: A Register-Based Study Type de document : Texte imprimé et/ou numérique Auteurs : Ifrah ABDULLAHI, Auteur ; K. WONG, Auteur ; Keely BEBBINGTON, Auteur ; R. MUTCH, Auteur ; N. DE KLERK, Auteur ; S. CHERIAN, Auteur ; J. DOWNS, Auteur ; H. LEONARD, Auteur ; E. J. GLASSON, Auteur Article en page(s) : p.3611-3624 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Immigrant  Intellectual disability  Severity  Symptomatology Index. décimale : PER Périodiques Résumé : An increased prevalence of autism spectrum disorder (ASD) among children of immigrant backgrounds has been observed but clinical profiles are rarely compared. Diagnostic data from children with ASD notified to the Western Australian Register for Autism Spectrum Disorders were analysed according to maternal-race ethnicity and country of birth. A total of 4776 children aged between 0 and 18 years diagnosed with ASD from 1999 to 2017 were included. Those born to immigrant mothers from lower income countries were younger at the time of diagnosis, had an increased risk of intellectual disability and poorer presentations in the social and communication domains. Further work is required to understand environmental influences that may affect children born to immigrant mothers and to improve monitoring and assessments. En ligne : http://dx.doi.org/10.1007/s10803-019-04068-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=405 [article] Diagnosis of Autism Spectrum Disorder According to Maternal-Race Ethnicity and Country of Birth: A Register-Based Study [Texte imprimé et/ou numérique] / Ifrah ABDULLAHI, Auteur ; K. WONG, Auteur ; Keely BEBBINGTON, Auteur ; R. MUTCH, Auteur ; N. DE KLERK, Auteur ; S. CHERIAN, Auteur ; J. DOWNS, Auteur ; H. LEONARD, Auteur ; E. J. GLASSON, Auteur . - p.3611-3624. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-9 (September 2019) . - p.3611-3624 Mots-clés : Autism spectrum disorder  Immigrant  Intellectual disability  Severity  Symptomatology Index. décimale : PER Périodiques Résumé : An increased prevalence of autism spectrum disorder (ASD) among children of immigrant backgrounds has been observed but clinical profiles are rarely compared. Diagnostic data from children with ASD notified to the Western Australian Register for Autism Spectrum Disorders were analysed according to maternal-race ethnicity and country of birth. A total of 4776 children aged between 0 and 18 years diagnosed with ASD from 1999 to 2017 were included. Those born to immigrant mothers from lower income countries were younger at the time of diagnosis, had an increased risk of intellectual disability and poorer presentations in the social and communication domains. Further work is required to understand environmental influences that may affect children born to immigrant mothers and to improve monitoring and assessments. En ligne : http://dx.doi.org/10.1007/s10803-019-04068-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=405

Investigating associations between birth order and autism diagnostic phenotypes / Gail A. ALVARES in Journal of Child Psychology and Psychiatry, 62-8 (August 2021)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 62-8 (August 2021) . - p.961-970 Titre : Investigating associations between birth order and autism diagnostic phenotypes Type de document : Texte imprimé et/ou numérique Auteurs : Gail A. ALVARES, Auteur ; M. K. LICARI, Auteur ; P. G. STEVENSON, Auteur ; Keely BEBBINGTON, Auteur ; Matthew N. COOPER, Auteur ; E. J. GLASSON, Auteur ; D. W. TAN, Auteur ; M. ULJAREVIC, Auteur ; Kandice J. VARCIN, Auteur ; J. WRAY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur Article en page(s) : p.961-970 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/diagnosis/epidemiology  Autistic Disorder  Birth Order  Child, Preschool  Female  Humans  Male  Phenotype  Prospective Studies  Autism spectrum disorder  diagnosis  first birth  intellectual disability Index. décimale : PER Périodiques Résumé : BACKGROUND: Birth order effects have been linked to variability in intelligence, educational attainment and sexual orientation. First- and later-born children have been linked to an increased likelihood of an Autism Spectrum Disorder (ASD) diagnosis, with a smaller body of evidence implicating decreases in cognitive functioning with increased birth order. The present study investigated the potential association between birth order and ASD diagnostic phenotypes in a large and representative population sample. METHODS: Data were obtained from an ongoing prospective diagnostic registry, collected between 1999 and 2017, including children (1-18 years of age, n = 5,404) diagnosed with ASD in the state of Western Australia. Children with ASD were ranked relative to sibling's birth to establish birth order within families at time of ASD diagnosis. Information reported to the registry by health professionals at the time of diagnostic evaluation included demographic and family characteristics, functional abilities and intellectual capacity. RESULTS: Adaptive functioning and intelligence scores decreased with increasing birth order, with later-born children more likely to have an intellectual disability. Compared to first-born children with siblings, first-born children without siblings at the time of diagnosis also exhibited decreased cognitive functioning. CONCLUSIONS: These findings demonstrate for the first time an association between increasing birth order and variability in ASD clinical phenotypes at diagnosis, with potential evidence of reproductive curtailment in children without siblings. Taken together, these findings have significant implications for advancing understanding about the potential mechanisms that contribute to heterogeneity in ASD clinical presentations as a function of birth order and family size. En ligne : http://dx.doi.org/10.1111/jcpp.13349 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 [article] Investigating associations between birth order and autism diagnostic phenotypes [Texte imprimé et/ou numérique] / Gail A. ALVARES, Auteur ; M. K. LICARI, Auteur ; P. G. STEVENSON, Auteur ; Keely BEBBINGTON, Auteur ; Matthew N. COOPER, Auteur ; E. J. GLASSON, Auteur ; D. W. TAN, Auteur ; M. ULJAREVIC, Auteur ; Kandice J. VARCIN, Auteur ; J. WRAY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur . - p.961-970. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 62-8 (August 2021) . - p.961-970 Mots-clés : Autism Spectrum Disorder/diagnosis/epidemiology  Autistic Disorder  Birth Order  Child, Preschool  Female  Humans  Male  Phenotype  Prospective Studies  Autism spectrum disorder  diagnosis  first birth  intellectual disability Index. décimale : PER Périodiques Résumé : BACKGROUND: Birth order effects have been linked to variability in intelligence, educational attainment and sexual orientation. First- and later-born children have been linked to an increased likelihood of an Autism Spectrum Disorder (ASD) diagnosis, with a smaller body of evidence implicating decreases in cognitive functioning with increased birth order. The present study investigated the potential association between birth order and ASD diagnostic phenotypes in a large and representative population sample. METHODS: Data were obtained from an ongoing prospective diagnostic registry, collected between 1999 and 2017, including children (1-18 years of age, n = 5,404) diagnosed with ASD in the state of Western Australia. Children with ASD were ranked relative to sibling's birth to establish birth order within families at time of ASD diagnosis. Information reported to the registry by health professionals at the time of diagnostic evaluation included demographic and family characteristics, functional abilities and intellectual capacity. RESULTS: Adaptive functioning and intelligence scores decreased with increasing birth order, with later-born children more likely to have an intellectual disability. Compared to first-born children with siblings, first-born children without siblings at the time of diagnosis also exhibited decreased cognitive functioning. CONCLUSIONS: These findings demonstrate for the first time an association between increasing birth order and variability in ASD clinical phenotypes at diagnosis, with potential evidence of reproductive curtailment in children without siblings. Taken together, these findings have significant implications for advancing understanding about the potential mechanisms that contribute to heterogeneity in ASD clinical presentations as a function of birth order and family size. En ligne : http://dx.doi.org/10.1111/jcpp.13349 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456

The misnomer of 'high functioning autism': Intelligence is an imprecise predictor of functional abilities at diagnosis / Gail A. ALVARES in Autism, 24-1 (January 2020)  

Public ISBD [article]  inAutism > 24-1 (January 2020) . - p.221-232 Titre : The misnomer of 'high functioning autism': Intelligence is an imprecise predictor of functional abilities at diagnosis Type de document : Texte imprimé et/ou numérique Auteurs : Gail A. ALVARES, Auteur ; Keely BEBBINGTON, Auteur ; D. CLEARY, Auteur ; K. EVANS, Auteur ; E. J. GLASSON, Auteur ; M. T. MAYBERY, Auteur ; S. PILLAR, Auteur ; M. ULJAREVIC, Auteur ; Kandice J. VARCIN, Auteur ; J. WRAY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur Article en page(s) : p.221-232 Langues : Anglais (eng) Mots-clés : adaptive behaviour  autism spectrum disorders  cognitive impairment  intellectual disability Index. décimale : PER Périodiques Résumé : 'High functioning autism' is a term often used for individuals with autism spectrum disorder without an intellectual disability. Over time, this term has become synonymous with expectations of greater functional skills and better long-term outcomes, despite contradictory clinical observations. This study investigated the relationship between adaptive behaviour, cognitive estimates (intelligence quotient) and age at diagnosis in autism spectrum disorder. Participants (n = 2225, 1-18 years of age) were notified at diagnosis to a prospective register and grouped by presence (n = 1041) or absence (n = 1184) of intellectual disability. Functional abilities were reported using the Vineland Adaptive Behaviour Scales. Regression models suggested that intelligence quotient was a weak predictor of Vineland Adaptive Behaviour Scales after controlling for sex. Whereas the intellectual disability group's adaptive behaviour estimates were close to reported intelligence quotients, Vineland Adaptive Behaviour Scales scores fell significantly below intelligence quotients for children without intellectual disability. The gap between intelligence quotient and Vineland Adaptive Behaviour Scales scores remained large with increasing age at diagnosis for all children. These data indicate that estimates from intelligence quotient alone are an imprecise proxy for functional abilities when diagnosing autism spectrum disorder, particularly for those without intellectual disability. We argue that 'high functioning autism' is an inaccurate clinical descriptor when based solely on intelligence quotient demarcations and this term should be abandoned in research and clinical practice. En ligne : http://dx.doi.org/10.1177/1362361319852831 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=414 [article] The misnomer of 'high functioning autism': Intelligence is an imprecise predictor of functional abilities at diagnosis [Texte imprimé et/ou numérique] / Gail A. ALVARES, Auteur ; Keely BEBBINGTON, Auteur ; D. CLEARY, Auteur ; K. EVANS, Auteur ; E. J. GLASSON, Auteur ; M. T. MAYBERY, Auteur ; S. PILLAR, Auteur ; M. ULJAREVIC, Auteur ; Kandice J. VARCIN, Auteur ; J. WRAY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur . - p.221-232. Langues : Anglais (eng) in Autism > 24-1 (January 2020) . - p.221-232 Mots-clés : adaptive behaviour  autism spectrum disorders  cognitive impairment  intellectual disability Index. décimale : PER Périodiques Résumé : 'High functioning autism' is a term often used for individuals with autism spectrum disorder without an intellectual disability. Over time, this term has become synonymous with expectations of greater functional skills and better long-term outcomes, despite contradictory clinical observations. This study investigated the relationship between adaptive behaviour, cognitive estimates (intelligence quotient) and age at diagnosis in autism spectrum disorder. Participants (n = 2225, 1-18 years of age) were notified at diagnosis to a prospective register and grouped by presence (n = 1041) or absence (n = 1184) of intellectual disability. Functional abilities were reported using the Vineland Adaptive Behaviour Scales. Regression models suggested that intelligence quotient was a weak predictor of Vineland Adaptive Behaviour Scales after controlling for sex. Whereas the intellectual disability group's adaptive behaviour estimates were close to reported intelligence quotients, Vineland Adaptive Behaviour Scales scores fell significantly below intelligence quotients for children without intellectual disability. The gap between intelligence quotient and Vineland Adaptive Behaviour Scales scores remained large with increasing age at diagnosis for all children. These data indicate that estimates from intelligence quotient alone are an imprecise proxy for functional abilities when diagnosing autism spectrum disorder, particularly for those without intellectual disability. We argue that 'high functioning autism' is an inaccurate clinical descriptor when based solely on intelligence quotient demarcations and this term should be abandoned in research and clinical practice. En ligne : http://dx.doi.org/10.1177/1362361319852831 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=414

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