Correction to: Physical health in children with neurodevelopmental disorders / S. ALABAF in Journal of Autism and Developmental Disorders, 49-1 (January 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-1 (January 2019) . - p.96-97 Titre : Correction to: Physical health in children with neurodevelopmental disorders Type de document : Texte imprimé et/ou numérique Auteurs : S. ALABAF, Auteur ; C. GILLBERG, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; N. KEREKES, Auteur ; M. RASTAM, Auteur ; Henrik ANCKARSATER, Auteur Article en page(s) : p.96-97 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The original version of this article unfortunately contained a mistake in Fig. 2 part labels, the label "d" was incorrectly labelled as "c" and the subsequent labels should be corrected as d, e, and f. The corrected Fig. 2 is given below. En ligne : http://dx.doi.org/10.1007/s10803-018-3758-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=376 [article] Correction to: Physical health in children with neurodevelopmental disorders [Texte imprimé et/ou numérique] / S. ALABAF, Auteur ; C. GILLBERG, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; N. KEREKES, Auteur ; M. RASTAM, Auteur ; Henrik ANCKARSATER, Auteur . - p.96-97. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-1 (January 2019) . - p.96-97 Index. décimale : PER Périodiques Résumé : The original version of this article unfortunately contained a mistake in Fig. 2 part labels, the label "d" was incorrectly labelled as "c" and the subsequent labels should be corrected as d, e, and f. The corrected Fig. 2 is given below. En ligne : http://dx.doi.org/10.1007/s10803-018-3758-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=376

Effect of co-twin gender on neurodevelopmental symptoms: a twin register study / J. M. ERIKSSON in Molecular Autism, 7 (2016)  

Public ISBD [article]  inMolecular Autism > 7 (2016) . - 8p. Titre : Effect of co-twin gender on neurodevelopmental symptoms: a twin register study Type de document : Texte imprimé et/ou numérique Auteurs : J. M. ERIKSSON, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; Susanne BEJEROT, Auteur ; E. ERIKSSON, Auteur Article en page(s) : 8p. Langues : Anglais (eng) Mots-clés : Attention Deficit Disorder with Hyperactivity/genetics/physiopathology  Autism Spectrum Disorder/genetics/physiopathology  Child  Comorbidity  Diseases in Twins  Female  Follow-Up Studies  Gender Identity  Humans  Interview, Psychological  Male  Neurodevelopmental Disorders/genetics/physiopathology  Parents  Pregnancy  Prenatal Exposure Delayed Effects  Sex Characteristics  Stereotyped Behavior  Sweden/epidemiology  Testosterone/physiology  Tic Disorders/genetics/physiopathology  Twins, Dizygotic/psychology  Asperger syndrome  Attention-deficit hyperactivity disorders  Autistic disorder  Symptom assessment  Twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) are neurodevelopmental disorders thought to have both genetic and environmental causes. It has been hypothesized that exposure to elevated levels of prenatal testosterone is associated with elevated traits of ASD and ADHD. Assuming that testosterone levels from a dizygotic male twin fetus may lead to enhanced testosterone exposure of its co-twins, we aimed to test the prenatal testosterone hypothesis by comparing same-sex with opposite-sex dizygotic twins with respect to neurodevelopmental symptoms. METHODS: Neuropsychiatric traits were assessed in a population-based twin cohort from the Child and Adolescent Twin Study in Sweden (CATSS). Parental interviews were conducted for 16,312 dizygotic twins, 9 and 12 years old, with the Autism-Tics, ADHD, and other Comorbidities inventory (A-TAC). RESULTS: Girls with a female co-twin had an increased risk of reaching the cut-off score for ADHD compared with girls with a male co-twin. Both boys and girls with a female co-twin displayed a larger number of traits related to attention deficit and repetitive and stereotyped behaviors than those with a male twin. In girls, this also extended to social interaction and the combined measures for ASD and ADHD, however, with small effect sizes. CONCLUSIONS: Our results are reverse to what would have been expected from the prenatal testosterone hypothesis but consistent with a previous study of ASD and ADHD traits in dizygotic twins. The seemingly protective effect for girls of having a twin brother may be an effect of parent report bias, but may also be an unexpected effect of sharing the intrauterine environment with a male co-twin. En ligne : http://dx.doi.org/10.1186/s13229-016-0074-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328 [article] Effect of co-twin gender on neurodevelopmental symptoms: a twin register study [Texte imprimé et/ou numérique] / J. M. ERIKSSON, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; Susanne BEJEROT, Auteur ; E. ERIKSSON, Auteur . - 8p. Langues : Anglais (eng) in Molecular Autism > 7 (2016) . - 8p. Mots-clés : Attention Deficit Disorder with Hyperactivity/genetics/physiopathology  Autism Spectrum Disorder/genetics/physiopathology  Child  Comorbidity  Diseases in Twins  Female  Follow-Up Studies  Gender Identity  Humans  Interview, Psychological  Male  Neurodevelopmental Disorders/genetics/physiopathology  Parents  Pregnancy  Prenatal Exposure Delayed Effects  Sex Characteristics  Stereotyped Behavior  Sweden/epidemiology  Testosterone/physiology  Tic Disorders/genetics/physiopathology  Twins, Dizygotic/psychology  Asperger syndrome  Attention-deficit hyperactivity disorders  Autistic disorder  Symptom assessment  Twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) are neurodevelopmental disorders thought to have both genetic and environmental causes. It has been hypothesized that exposure to elevated levels of prenatal testosterone is associated with elevated traits of ASD and ADHD. Assuming that testosterone levels from a dizygotic male twin fetus may lead to enhanced testosterone exposure of its co-twins, we aimed to test the prenatal testosterone hypothesis by comparing same-sex with opposite-sex dizygotic twins with respect to neurodevelopmental symptoms. METHODS: Neuropsychiatric traits were assessed in a population-based twin cohort from the Child and Adolescent Twin Study in Sweden (CATSS). Parental interviews were conducted for 16,312 dizygotic twins, 9 and 12 years old, with the Autism-Tics, ADHD, and other Comorbidities inventory (A-TAC). RESULTS: Girls with a female co-twin had an increased risk of reaching the cut-off score for ADHD compared with girls with a male co-twin. Both boys and girls with a female co-twin displayed a larger number of traits related to attention deficit and repetitive and stereotyped behaviors than those with a male twin. In girls, this also extended to social interaction and the combined measures for ASD and ADHD, however, with small effect sizes. CONCLUSIONS: Our results are reverse to what would have been expected from the prenatal testosterone hypothesis but consistent with a previous study of ASD and ADHD traits in dizygotic twins. The seemingly protective effect for girls of having a twin brother may be an effect of parent report bias, but may also be an unexpected effect of sharing the intrauterine environment with a male co-twin. En ligne : http://dx.doi.org/10.1186/s13229-016-0074-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328

Etiological influences on the stability of autistic traits from childhood to early adulthood: evidence from a twin study / M. J. TAYLOR in Molecular Autism, 8 (2017)  

Public ISBD [article]  inMolecular Autism > 8 (2017) . - 5p. Titre : Etiological influences on the stability of autistic traits from childhood to early adulthood: evidence from a twin study Type de document : Texte imprimé et/ou numérique Auteurs : M. J. TAYLOR, Auteur ; C. GILLBERG, Auteur ; P. LICHTENSTEIN, Auteur ; S. LUNDSTRÖM, Auteur Article en page(s) : 5p. Langues : Anglais (eng) Mots-clés : Adolescent  Autistic Disorder/*genetics/*psychology  Child  Diseases in Twins  Female  Humans  Longitudinal Studies  Male  Phenotype  Surveys and Questionnaires  Twins/*genetics  *Adulthood  *Autism  *Genetics  *Stability  *Twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorders (ASD) are persistent and lifelong conditions. Despite this, almost all twin studies focus on childhood. This twin study investigated the stability of autistic traits from childhood to early adulthood and explored the degree to which any stability could be explained by genetic or environmental factors. METHODS: Parents of over 2500 twin pairs completed questionnaires assessing autistic traits when twins were aged either 9 or 12 years and again when twins were aged 18. Bivariate twin analysis assessed the degree of phenotypic and etiological stability in autistic traits across this period. Genetic overlap in autistic traits across development was also tested in individuals displaying a broad ASD phenotype, defined as scoring within the highest 5% of the sample. RESULTS: Autistic traits displayed moderate phenotypic stability (r = .39). The heritability of autistic traits was 76-77% in childhood and 60-62% in adulthood. A moderate degree of genetic influences on childhood autistic traits were carried across into adulthood (genetic correlation = .49). The majority (85%) of the stability in autistic traits was attributable to genetic factors. Genetic influences on autistic traits were moderately stable from childhood to early adulthood at the extremes (genetic correlation = .64). CONCLUSIONS: Broad autistic traits display moderate phenotypic and etiological stability from childhood to early adulthood. Genetic factors accounted for almost all phenotypic stability, although there was some phenotypic and etiological instability in autistic traits. Thus, autistic traits in adulthood are influenced by a combination of enduring and unique genetic factors. En ligne : http://dx.doi.org/10.1186/s13229-017-0120-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331 [article] Etiological influences on the stability of autistic traits from childhood to early adulthood: evidence from a twin study [Texte imprimé et/ou numérique] / M. J. TAYLOR, Auteur ; C. GILLBERG, Auteur ; P. LICHTENSTEIN, Auteur ; S. LUNDSTRÖM, Auteur . - 5p. Langues : Anglais (eng) in Molecular Autism > 8 (2017) . - 5p. Mots-clés : Adolescent  Autistic Disorder/*genetics/*psychology  Child  Diseases in Twins  Female  Humans  Longitudinal Studies  Male  Phenotype  Surveys and Questionnaires  Twins/*genetics  *Adulthood  *Autism  *Genetics  *Stability  *Twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorders (ASD) are persistent and lifelong conditions. Despite this, almost all twin studies focus on childhood. This twin study investigated the stability of autistic traits from childhood to early adulthood and explored the degree to which any stability could be explained by genetic or environmental factors. METHODS: Parents of over 2500 twin pairs completed questionnaires assessing autistic traits when twins were aged either 9 or 12 years and again when twins were aged 18. Bivariate twin analysis assessed the degree of phenotypic and etiological stability in autistic traits across this period. Genetic overlap in autistic traits across development was also tested in individuals displaying a broad ASD phenotype, defined as scoring within the highest 5% of the sample. RESULTS: Autistic traits displayed moderate phenotypic stability (r = .39). The heritability of autistic traits was 76-77% in childhood and 60-62% in adulthood. A moderate degree of genetic influences on childhood autistic traits were carried across into adulthood (genetic correlation = .49). The majority (85%) of the stability in autistic traits was attributable to genetic factors. Genetic influences on autistic traits were moderately stable from childhood to early adulthood at the extremes (genetic correlation = .64). CONCLUSIONS: Broad autistic traits display moderate phenotypic and etiological stability from childhood to early adulthood. Genetic factors accounted for almost all phenotypic stability, although there was some phenotypic and etiological instability in autistic traits. Thus, autistic traits in adulthood are influenced by a combination of enduring and unique genetic factors. En ligne : http://dx.doi.org/10.1186/s13229-017-0120-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331

Etiological links between autism and difficulties in initiating and maintaining sleep: a familial co-aggregation and twin study / M. J. TAYLOR in Journal of Child Psychology and Psychiatry, 63-3 (March 2022)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 63-3 (March 2022) . - p.315-323 Titre : Etiological links between autism and difficulties in initiating and maintaining sleep: a familial co-aggregation and twin study Type de document : Texte imprimé et/ou numérique Auteurs : M. J. TAYLOR, Auteur ; H. LARSSON, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; Agnieszka BUTWICKA, Auteur Article en page(s) : p.315-323 Langues : Anglais (eng) Mots-clés : Autism  comorbidity  genetics  sleep  twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Difficulties initiating and maintaining sleep (DIMS) are frequent features of autism, yet little is known about why these conditions co-occur. One possibility is that they share etiological factors, yet this hypothesis remains to be tested using quantitative genetic designs. We thus investigated etiological links between autism and DIMS using familial co-aggregation and twin methods. METHODS: Twins, siblings, half-siblings, and cousins of 50,097 individuals with autism were identified from Swedish population registries. Their risk of DIMS, defined through diagnoses of insomnia and/or melatonin prescriptions, was then estimated. Twin analyses conducted on 15,279 child and adolescent twin pairs investigated etiological links between DIMS and ASD. RESULTS: 22.8% of autistic individuals had DIMS. Monozygotic co-twins of individuals with autism were most at risk of DIMS compared to the reference group (OR?=?6.6 [2.5-17.4]), followed by dizygotic co-twins (OR?=?2.6 [1.5-4.5]) and full siblings (OR?=?2.5 [2.4-2.6]). Half-siblings and cousins of individuals with autism were least likely to have DIMS relative to the reference group (OR range?=?1.3-1.5). Twin analyses estimated a correlation of 0.57 (0.53-0.61) between autism and DIMS, with a genetic correlation of 0.62 (0.60-0.68). These overlapping genetic factors explained 94% of the covariance between these conditions. Autistic traits also showed genetic overlap with DIMS. CONCLUSIONS: Our results suggest that shared genetic mechanisms underlie autism and DIMS, which may lead them to co-occur. Untangling the etiological overlap between these conditions has potential to assist in understanding the etiology of each condition, as well as their associated outcomes. En ligne : http://dx.doi.org/10.1111/jcpp.13473 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457 [article] Etiological links between autism and difficulties in initiating and maintaining sleep: a familial co-aggregation and twin study [Texte imprimé et/ou numérique] / M. J. TAYLOR, Auteur ; H. LARSSON, Auteur ; S. LUNDSTRÖM, Auteur ; P. LICHTENSTEIN, Auteur ; Agnieszka BUTWICKA, Auteur . - p.315-323. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 63-3 (March 2022) . - p.315-323 Mots-clés : Autism  comorbidity  genetics  sleep  twin study Index. décimale : PER Périodiques Résumé : BACKGROUND: Difficulties initiating and maintaining sleep (DIMS) are frequent features of autism, yet little is known about why these conditions co-occur. One possibility is that they share etiological factors, yet this hypothesis remains to be tested using quantitative genetic designs. We thus investigated etiological links between autism and DIMS using familial co-aggregation and twin methods. METHODS: Twins, siblings, half-siblings, and cousins of 50,097 individuals with autism were identified from Swedish population registries. Their risk of DIMS, defined through diagnoses of insomnia and/or melatonin prescriptions, was then estimated. Twin analyses conducted on 15,279 child and adolescent twin pairs investigated etiological links between DIMS and ASD. RESULTS: 22.8% of autistic individuals had DIMS. Monozygotic co-twins of individuals with autism were most at risk of DIMS compared to the reference group (OR?=?6.6 [2.5-17.4]), followed by dizygotic co-twins (OR?=?2.6 [1.5-4.5]) and full siblings (OR?=?2.5 [2.4-2.6]). Half-siblings and cousins of individuals with autism were least likely to have DIMS relative to the reference group (OR range?=?1.3-1.5). Twin analyses estimated a correlation of 0.57 (0.53-0.61) between autism and DIMS, with a genetic correlation of 0.62 (0.60-0.68). These overlapping genetic factors explained 94% of the covariance between these conditions. Autistic traits also showed genetic overlap with DIMS. CONCLUSIONS: Our results suggest that shared genetic mechanisms underlie autism and DIMS, which may lead them to co-occur. Untangling the etiological overlap between these conditions has potential to assist in understanding the etiology of each condition, as well as their associated outcomes. En ligne : http://dx.doi.org/10.1111/jcpp.13473 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457

Has the attention deficit hyperactivity disorder phenotype become more common in children between 2004 and 2014? Trends over 10 years from a Swedish general population sample / M. RYDELL in Journal of Child Psychology and Psychiatry, 59-8 (August 2018)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 59-8 (August 2018) . - p.863-871 Titre : Has the attention deficit hyperactivity disorder phenotype become more common in children between 2004 and 2014? Trends over 10 years from a Swedish general population sample Type de document : Texte imprimé et/ou numérique Auteurs : M. RYDELL, Auteur ; S. LUNDSTRÖM, Auteur ; C. GILLBERG, Auteur ; P. LICHTENSTEIN, Auteur ; H. LARSSON, Auteur Article en page(s) : p.863-871 Langues : Anglais (eng) Mots-clés : Adhd  epidemiology  lifetime prevalence  time trends Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies have reported increases in clinically diagnosed and treated attention deficit hyperactivity disorder (ADHD) during the last decade, but it is unclear if this reflects an increase in the underlying ADHD phenotype. We aimed to clarify if there has been an increase in the prevalence of ADHD-like traits in the general population from 2004 to 2014. METHOD: Data were collected from 9-year-old twins (19,271), participating in the population-based Child and Adolescent Twin Study in Sweden between 2004 and 2014. We assessed lifetime ADHD symptoms using the Autism-Tics, ADHD and other Comorbidities inventory. Research proxies for diagnostic-level ADHD and subthreshold ADHD were derived from this scale. We modeled the lifetime prevalence of diagnostic-level and subthreshold ADHD with logistic regression, and assessed mean ADHD scores each year with linear regression. Lifetime prevalence of clinically diagnosed ADHD was retrieved from the National Patient Register and modeled with logistic regression. RESULTS: The prevalence of diagnostic-level ADHD based on parent ratings did not differ significantly over time from 2004 to 2014 (OR 1.37; 95% CI: 0.77-2.45; p-value .233). Both subthreshold ADHD and mean ADHD scores increased significantly over time (both p-values <.001). Clinically diagnosed ADHD increased more than fivefold from 2004 to 2014 (OR 5.27, 95% CI: 1.85-14.96). CONCLUSIONS: We found no evidence of an increase in ADHD-like traits at the extreme end of the distribution from 2004 to 2014, but small increases in normal and subthreshold variations of ADHD-like traits were observed. This suggests that the increased rates of clinically diagnosed ADHD might reflect changes in diagnostic and treatment practices of ADHD, administrative changes in reporting diagnoses, greater awareness of ADHD, better access to healthcare, or current overdiagnosis, rather than an increase in the ADHD phenotype. En ligne : http://dx.doi.org/10.1111/jcpp.12882 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=368 [article] Has the attention deficit hyperactivity disorder phenotype become more common in children between 2004 and 2014? Trends over 10 years from a Swedish general population sample [Texte imprimé et/ou numérique] / M. RYDELL, Auteur ; S. LUNDSTRÖM, Auteur ; C. GILLBERG, Auteur ; P. LICHTENSTEIN, Auteur ; H. LARSSON, Auteur . - p.863-871. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 59-8 (August 2018) . - p.863-871 Mots-clés : Adhd  epidemiology  lifetime prevalence  time trends Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies have reported increases in clinically diagnosed and treated attention deficit hyperactivity disorder (ADHD) during the last decade, but it is unclear if this reflects an increase in the underlying ADHD phenotype. We aimed to clarify if there has been an increase in the prevalence of ADHD-like traits in the general population from 2004 to 2014. METHOD: Data were collected from 9-year-old twins (19,271), participating in the population-based Child and Adolescent Twin Study in Sweden between 2004 and 2014. We assessed lifetime ADHD symptoms using the Autism-Tics, ADHD and other Comorbidities inventory. Research proxies for diagnostic-level ADHD and subthreshold ADHD were derived from this scale. We modeled the lifetime prevalence of diagnostic-level and subthreshold ADHD with logistic regression, and assessed mean ADHD scores each year with linear regression. Lifetime prevalence of clinically diagnosed ADHD was retrieved from the National Patient Register and modeled with logistic regression. RESULTS: The prevalence of diagnostic-level ADHD based on parent ratings did not differ significantly over time from 2004 to 2014 (OR 1.37; 95% CI: 0.77-2.45; p-value .233). Both subthreshold ADHD and mean ADHD scores increased significantly over time (both p-values <.001). Clinically diagnosed ADHD increased more than fivefold from 2004 to 2014 (OR 5.27, 95% CI: 1.85-14.96). CONCLUSIONS: We found no evidence of an increase in ADHD-like traits at the extreme end of the distribution from 2004 to 2014, but small increases in normal and subthreshold variations of ADHD-like traits were observed. This suggests that the increased rates of clinically diagnosed ADHD might reflect changes in diagnostic and treatment practices of ADHD, administrative changes in reporting diagnoses, greater awareness of ADHD, better access to healthcare, or current overdiagnosis, rather than an increase in the ADHD phenotype. En ligne : http://dx.doi.org/10.1111/jcpp.12882 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=368

Investigating the childhood symptom profile of community-based individuals diagnosed with attention-deficit/hyperactivity disorder as adults / M. J. TAYLOR in Journal of Child Psychology and Psychiatry, 60-3 (March 2019)  

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Physical health in children with neurodevelopmental disorders / S. ALABAF in Journal of Autism and Developmental Disorders, 49-1 (January 2019)  

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Preschool to School in Autism: Neuropsychiatric Problems 8 Years After Diagnosis at 3 Years of Age / M. BARNEVIK OLSSON in Journal of Autism and Developmental Disorders, 46-8 (August 2016)  

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Reproductive stoppage in autism spectrum disorder in a population of 2.5 million individuals / R. KUJA-HALKOLA in Molecular Autism, 10 (2019)  

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Secular changes in the symptom level of clinically diagnosed autism / O. ARVIDSSON in Journal of Child Psychology and Psychiatry, 59-7 (July 2018)  

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Sex-specific manifestation of genetic risk for attention deficit hyperactivity disorder in the general population / J. MARTIN in Journal of Child Psychology and Psychiatry, 59-8 (August 2018)  

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Sexual orientation and adolescent suicide attempt and self-harm: a co-twin control study / L. M. O'REILLY in Journal of Child Psychology and Psychiatry, 62-7 (July 2021)  

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