Childhood diagnoses in individuals identified as autistics in adulthood / Eya-Mist RØDGAARD in Molecular Autism, 12 (2021)  

Public ISBD [article]  inMolecular Autism > 12 (2021) . - 73 p. Titre : Childhood diagnoses in individuals identified as autistics in adulthood Type de document : texte imprimé Auteurs : Eya-Mist RØDGAARD, Auteur ; Kristian JENSEN, Auteur ; Kamilla Woznica MISKOWIAK, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : 73 p. Langues : Anglais (eng) Mots-clés : Adult  Autism  Comorbidity  Late diagnosis  A/S in the past three years. EMR, KJ, and LM declare no competing interests. Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism is a developmental condition, where symptoms are expected to occur in childhood, but a significant number of individuals are diagnosed with autism for the first time in adulthood. Here, we examine diagnoses given in childhood among individuals that are diagnosed with autism in adulthood, to investigate whether the late autism diagnosis might be explained by misdiagnosis in childhood or diagnostic overshadowing. METHODS: Through the Danish National Patient Registry, we identified individuals diagnosed with autism in adulthood (N = 2199), as well as a control sample with no records of an autism diagnosis (N = 460,798) and calculated how many had received different psychiatric or neurological diagnoses in childhood. RESULTS: We found that most childhood diagnoses were overrepresented in those with an adult autism diagnosis, and attention-deficit hyperactivity disorder, affective disorders, anxiety, and stress disorders were the most prevalent childhood conditions in this group. However, 69% of males and 61% of females with adult autism diagnoses were not found to have received any of the investigated diagnoses before 18 years of age, and most childhood diagnoses were given after the age of 12. LIMITATIONS: Milder to moderate cases of psychiatric conditions that have been solely treated by family physicians or school psychologists may not be fully included in our dataset. The study is based on data from the Danish health care system, and further research is needed to assess whether the findings can be generalized to other countries. CONCLUSION: A majority of those with an adult autism diagnosis had no records of having received any of the investigated diagnoses in childhood. In these cases, the late autism diagnosis is therefore unlikely to be explained by either misdiagnosis or overshadowing. This result is at odds with the prevailing notion that autistic symptoms tend to diminish with age. Therefore, further research is warranted to examine how and if early signs of autism may have manifested among these individuals, and how similar they are to autistic people diagnosed earlier in their development. En ligne : http://dx.doi.org/10.1186/s13229-021-00478-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459 [article] Childhood diagnoses in individuals identified as autistics in adulthood [texte imprimé] / Eya-Mist RØDGAARD, Auteur ; Kristian JENSEN, Auteur ; Kamilla Woznica MISKOWIAK, Auteur ; Laurent MOTTRON, Auteur . - 73 p. Langues : Anglais (eng) in Molecular Autism > 12 (2021) . - 73 p. Mots-clés : Adult  Autism  Comorbidity  Late diagnosis  A/S in the past three years. EMR, KJ, and LM declare no competing interests. Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism is a developmental condition, where symptoms are expected to occur in childhood, but a significant number of individuals are diagnosed with autism for the first time in adulthood. Here, we examine diagnoses given in childhood among individuals that are diagnosed with autism in adulthood, to investigate whether the late autism diagnosis might be explained by misdiagnosis in childhood or diagnostic overshadowing. METHODS: Through the Danish National Patient Registry, we identified individuals diagnosed with autism in adulthood (N = 2199), as well as a control sample with no records of an autism diagnosis (N = 460,798) and calculated how many had received different psychiatric or neurological diagnoses in childhood. RESULTS: We found that most childhood diagnoses were overrepresented in those with an adult autism diagnosis, and attention-deficit hyperactivity disorder, affective disorders, anxiety, and stress disorders were the most prevalent childhood conditions in this group. However, 69% of males and 61% of females with adult autism diagnoses were not found to have received any of the investigated diagnoses before 18 years of age, and most childhood diagnoses were given after the age of 12. LIMITATIONS: Milder to moderate cases of psychiatric conditions that have been solely treated by family physicians or school psychologists may not be fully included in our dataset. The study is based on data from the Danish health care system, and further research is needed to assess whether the findings can be generalized to other countries. CONCLUSION: A majority of those with an adult autism diagnosis had no records of having received any of the investigated diagnoses in childhood. In these cases, the late autism diagnosis is therefore unlikely to be explained by either misdiagnosis or overshadowing. This result is at odds with the prevailing notion that autistic symptoms tend to diminish with age. Therefore, further research is warranted to examine how and if early signs of autism may have manifested among these individuals, and how similar they are to autistic people diagnosed earlier in their development. En ligne : http://dx.doi.org/10.1186/s13229-021-00478-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459

Clinical correlates of diagnostic certainty in children and youths with Autistic Disorder / Eya-Mist RØDGAARD in Molecular Autism, 15 (2024)  

Public ISBD [article]  inMolecular Autism > 15 (2024) . - 15p. Titre : Clinical correlates of diagnostic certainty in children and youths with Autistic Disorder Type de document : texte imprimé Auteurs : Eya-Mist RØDGAARD, Auteur ; Borja RODRIGUEZ-HERREROS, Auteur ; Abderrahim ZERIBI, Auteur ; Kristian JENSEN, Auteur ; Valérie COURCHESNE, Auteur ; Elise DOUARD, Auteur ; David GAGNON, Auteur ; Guillaume HUGUET, Auteur ; Sébastien JACQUEMONT, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : 15p. Langues : Anglais (eng) Mots-clés : Child  Humans  Adolescent  Child, Preschool  Autistic Disorder/diagnosis  Language  Autism Spectrum Disorder/diagnosis  Ados  Certainty  Diagnosis  Macrocephaly Index. décimale : PER Périodiques Résumé : BACKGROUND: Clinicians diagnosing autism rely on diagnostic criteria and instruments in combination with an implicit knowledge based on clinical expertise of the specific signs and presentations associated with the condition. This implicit knowledge influences how diagnostic criteria are interpreted, but it cannot be directly observed. Instead, insight into clinicians' understanding of autism can be gained by investigating their diagnostic certainty. Modest correlations between the certainty of an autism diagnosis and symptom load have been previously reported. Here, we investigated the associations of diagnostic certainty with specific items of the ADOS as well as other clinical features including head circumference. METHODS: Phenotypic data from the Simons Simplex Collection was used to investigate clinical correlates of diagnostic certainty in individuals diagnosed with Autistic Disorder (n = 1511, age 4 to 18 years). Participants were stratified by the ADOS module used to evaluate them. We investigated how diagnostic certainty was associated with total ADOS scores, age, and ADOS module. We calculated the odds-ratios of being diagnosed with the highest possible certainty given the presence or absence of different signs during the ADOS evaluation. Associations between diagnostic certainty and other cognitive and clinical variables were also assessed. RESULTS: In each ADOS module, some items showed a larger association with diagnostic certainty than others. Head circumference was significantly higher for individuals with the highest certainty rating across all three ADOS modules. In turn, head circumference was positively correlated with some of the ADOS items that were associated with diagnostic certainty, and was negatively correlated with verbal/nonverbal IQ ratio among those assessed with ADOS module 2. LIMITATIONS: The investigated cohort was heterogeneous, e.g. in terms of age, IQ, language level, and total ADOS score, which could impede the identification of associations that only exist in a subgroup of the population. The variability of the certainty ratings in the sample was low, limiting the power to identify potential associations with other variables. Additionally, the scoring of diagnostic certainty may vary between clinicians. CONCLUSION: Some ADOS items may better capture the signs that are most associated with clinicians' implicit knowledge of Autistic Disorder. If replicated in future studies, new diagnostic instruments with differentiated weighting of signs may be needed to better reflect this, possibly resulting in better specificity in standardized assessments. En ligne : https://dx.doi.org/10.1186/s13229-024-00592-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538 [article] Clinical correlates of diagnostic certainty in children and youths with Autistic Disorder [texte imprimé] / Eya-Mist RØDGAARD, Auteur ; Borja RODRIGUEZ-HERREROS, Auteur ; Abderrahim ZERIBI, Auteur ; Kristian JENSEN, Auteur ; Valérie COURCHESNE, Auteur ; Elise DOUARD, Auteur ; David GAGNON, Auteur ; Guillaume HUGUET, Auteur ; Sébastien JACQUEMONT, Auteur ; Laurent MOTTRON, Auteur . - 15p. Langues : Anglais (eng) in Molecular Autism > 15 (2024) . - 15p. Mots-clés : Child  Humans  Adolescent  Child, Preschool  Autistic Disorder/diagnosis  Language  Autism Spectrum Disorder/diagnosis  Ados  Certainty  Diagnosis  Macrocephaly Index. décimale : PER Périodiques Résumé : BACKGROUND: Clinicians diagnosing autism rely on diagnostic criteria and instruments in combination with an implicit knowledge based on clinical expertise of the specific signs and presentations associated with the condition. This implicit knowledge influences how diagnostic criteria are interpreted, but it cannot be directly observed. Instead, insight into clinicians' understanding of autism can be gained by investigating their diagnostic certainty. Modest correlations between the certainty of an autism diagnosis and symptom load have been previously reported. Here, we investigated the associations of diagnostic certainty with specific items of the ADOS as well as other clinical features including head circumference. METHODS: Phenotypic data from the Simons Simplex Collection was used to investigate clinical correlates of diagnostic certainty in individuals diagnosed with Autistic Disorder (n = 1511, age 4 to 18 years). Participants were stratified by the ADOS module used to evaluate them. We investigated how diagnostic certainty was associated with total ADOS scores, age, and ADOS module. We calculated the odds-ratios of being diagnosed with the highest possible certainty given the presence or absence of different signs during the ADOS evaluation. Associations between diagnostic certainty and other cognitive and clinical variables were also assessed. RESULTS: In each ADOS module, some items showed a larger association with diagnostic certainty than others. Head circumference was significantly higher for individuals with the highest certainty rating across all three ADOS modules. In turn, head circumference was positively correlated with some of the ADOS items that were associated with diagnostic certainty, and was negatively correlated with verbal/nonverbal IQ ratio among those assessed with ADOS module 2. LIMITATIONS: The investigated cohort was heterogeneous, e.g. in terms of age, IQ, language level, and total ADOS score, which could impede the identification of associations that only exist in a subgroup of the population. The variability of the certainty ratings in the sample was low, limiting the power to identify potential associations with other variables. Additionally, the scoring of diagnostic certainty may vary between clinicians. CONCLUSION: Some ADOS items may better capture the signs that are most associated with clinicians' implicit knowledge of Autistic Disorder. If replicated in future studies, new diagnostic instruments with differentiated weighting of signs may be needed to better reflect this, possibly resulting in better specificity in standardized assessments. En ligne : https://dx.doi.org/10.1186/s13229-024-00592-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538

Representativeness of autistic samples in studies recruiting through social media / Eya-Mist RØDGAARD in Autism Research, 15-8 (August 2022)  

Public ISBD [article]  inAutism Research > 15-8 (August 2022) . - p.1447-1456 Titre : Representativeness of autistic samples in studies recruiting through social media Type de document : texte imprimé Auteurs : Eya-Mist RØDGAARD, Auteur ; Kristian JENSEN, Auteur ; Kamilla Woznica MISKOWIAK, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.1447-1456 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/epidemiology  Autistic Disorder  Humans  Intellectual Disability/epidemiology  Social Media  Surveys and Questionnaires  autism  online recruitment  sampling bias  selection bias Index. décimale : PER Périodiques Résumé : Survey-based research with recruitment through online channels is a convenient way to obtain large samples and has recently been increasingly used in autism research. However, sampling from online channels may be associated with a high risk of sampling bias causing findings not to be generalizable to the autism population. Here we examined autism studies that have sampled on social media for markers of sampling bias. Most samples showed one or more indicators of sampling bias, in the form of reversed sex ratio, higher employment rates, higher education level, lower fraction of individuals with intellectual disability, and later age of diagnosis than would be expected when comparing with for example population study results from published research. Findings from many of the included studies are therefore difficult to generalize to the broader autism population. Suggestions for how research strategies may be adapted to address some of the problems are discussed. LAY SUMMARY: Online surveys offer a convenient way to recruit large numbers of participants for autism research. However, the resulting samples may not fully reflect the autism population. Here we investigated the samples of 36 autism studies that recruited participants online and found that the demographic composition tended to deviate from what has been reported about the autism population in previous research. The results may thus not be generalizable to autism in general. En ligne : http://dx.doi.org/10.1002/aur.2777 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=483 [article] Representativeness of autistic samples in studies recruiting through social media [texte imprimé] / Eya-Mist RØDGAARD, Auteur ; Kristian JENSEN, Auteur ; Kamilla Woznica MISKOWIAK, Auteur ; Laurent MOTTRON, Auteur . - p.1447-1456. Langues : Anglais (eng) in Autism Research > 15-8 (August 2022) . - p.1447-1456 Mots-clés : Autism Spectrum Disorder/epidemiology  Autistic Disorder  Humans  Intellectual Disability/epidemiology  Social Media  Surveys and Questionnaires  autism  online recruitment  sampling bias  selection bias Index. décimale : PER Périodiques Résumé : Survey-based research with recruitment through online channels is a convenient way to obtain large samples and has recently been increasingly used in autism research. However, sampling from online channels may be associated with a high risk of sampling bias causing findings not to be generalizable to the autism population. Here we examined autism studies that have sampled on social media for markers of sampling bias. Most samples showed one or more indicators of sampling bias, in the form of reversed sex ratio, higher employment rates, higher education level, lower fraction of individuals with intellectual disability, and later age of diagnosis than would be expected when comparing with for example population study results from published research. Findings from many of the included studies are therefore difficult to generalize to the broader autism population. Suggestions for how research strategies may be adapted to address some of the problems are discussed. LAY SUMMARY: Online surveys offer a convenient way to recruit large numbers of participants for autism research. However, the resulting samples may not fully reflect the autism population. Here we investigated the samples of 36 autism studies that recruited participants online and found that the demographic composition tended to deviate from what has been reported about the autism population in previous research. The results may thus not be generalizable to autism in general. En ligne : http://dx.doi.org/10.1002/aur.2777 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=483

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