Adverse family life events during pregnancy and ADHD symptoms in five-year-old offspring / M. A. ROSENQVIST in Journal of Child Psychology and Psychiatry, 60-6 (June 2019)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 60-6 (June 2019) . - p.665-675 Titre : Adverse family life events during pregnancy and ADHD symptoms in five-year-old offspring Type de document : Texte imprimé et/ou numérique Auteurs : M. A. ROSENQVIST, Auteur ; A. SJOLANDER, Auteur ; E. YSTROM, Auteur ; H. LARSSON, Auteur ; T. REICHBORN-KJENNERUD, Auteur Article en page(s) : p.665-675 Langues : Anglais (eng) Mots-clés : Adhd  MoBa  adverse life events  antenatal stress  delayed effects  prenatal exposures  the Norwegian Mother and Child Cohort Study Index. décimale : PER Périodiques Résumé : BACKGROUND: Prenatal exposure to maternal adverse life events has been associated with offspring ADHD, but the role of familial confounding is unclear. We aimed to clarify if adverse life events during pregnancy are related to ADHD symptoms in offspring, taking shared familial factors into account. METHOD: Data were collected on 34,751 children (including 6,427 siblings) participating in the population-based Norwegian Mother and Child Cohort Study. During pregnancy, mothers reported whether they had experienced specific life events. We assessed ADHD symptoms in five-year-old children with the Conners' Parent Rating Scale-Revised: short form. We modeled the associations between life events and mean ADHD scores with ordinary linear regression in the full cohort, and with fixed-effect linear regression in sibling comparisons to adjust for familial confounding. RESULTS: Children exposed to adverse life events had higher ADHD scores at age 5, with the strongest effect observed for financial problems (mean differences 0.10 [95% CI: 0.09, 0.11] in adjusted model), and the weakest for having lost someone close (0.02 [95% CI 0.01, 0.04] in adjusted model). Comparing exposure-discordant siblings resulted in attenuated estimates that were no longer statistically significant (e.g. mean difference for financial problems -0.03 [95% CI -0.07, 0.02]). ADHD scores increased if the mother had experienced the event as painful or difficult, and with the number of events, whereas sibling-comparison analyses resulted in estimates attenuated toward the null. CONCLUSIONS: These results suggest that the association between adverse life events during pregnancy and offspring ADHD symptoms is largely explained by familial factors. En ligne : http://dx.doi.org/10.1111/jcpp.12990 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=397 [article] Adverse family life events during pregnancy and ADHD symptoms in five-year-old offspring [Texte imprimé et/ou numérique] / M. A. ROSENQVIST, Auteur ; A. SJOLANDER, Auteur ; E. YSTROM, Auteur ; H. LARSSON, Auteur ; T. REICHBORN-KJENNERUD, Auteur . - p.665-675. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 60-6 (June 2019) . - p.665-675 Mots-clés : Adhd  MoBa  adverse life events  antenatal stress  delayed effects  prenatal exposures  the Norwegian Mother and Child Cohort Study Index. décimale : PER Périodiques Résumé : BACKGROUND: Prenatal exposure to maternal adverse life events has been associated with offspring ADHD, but the role of familial confounding is unclear. We aimed to clarify if adverse life events during pregnancy are related to ADHD symptoms in offspring, taking shared familial factors into account. METHOD: Data were collected on 34,751 children (including 6,427 siblings) participating in the population-based Norwegian Mother and Child Cohort Study. During pregnancy, mothers reported whether they had experienced specific life events. We assessed ADHD symptoms in five-year-old children with the Conners' Parent Rating Scale-Revised: short form. We modeled the associations between life events and mean ADHD scores with ordinary linear regression in the full cohort, and with fixed-effect linear regression in sibling comparisons to adjust for familial confounding. RESULTS: Children exposed to adverse life events had higher ADHD scores at age 5, with the strongest effect observed for financial problems (mean differences 0.10 [95% CI: 0.09, 0.11] in adjusted model), and the weakest for having lost someone close (0.02 [95% CI 0.01, 0.04] in adjusted model). Comparing exposure-discordant siblings resulted in attenuated estimates that were no longer statistically significant (e.g. mean difference for financial problems -0.03 [95% CI -0.07, 0.02]). ADHD scores increased if the mother had experienced the event as painful or difficult, and with the number of events, whereas sibling-comparison analyses resulted in estimates attenuated toward the null. CONCLUSIONS: These results suggest that the association between adverse life events during pregnancy and offspring ADHD symptoms is largely explained by familial factors. En ligne : http://dx.doi.org/10.1111/jcpp.12990 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=397

Bidirectional relationship between eating disorders and autoimmune diseases / A. HEDMAN in Journal of Child Psychology and Psychiatry, 60-7 (July 2019)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 60-7 (July 2019) . - p.803-812 Titre : Bidirectional relationship between eating disorders and autoimmune diseases Type de document : Texte imprimé et/ou numérique Auteurs : A. HEDMAN, Auteur ; L. BREITHAUPT, Auteur ; C. HUBEL, Auteur ; L. M. THORNTON, Auteur ; A. TILLANDER, Auteur ; C. NORRING, Auteur ; A. BIRGEGARD, Auteur ; H. LARSSON, Auteur ; J. F. LUDVIGSSON, Auteur ; L. SAVENDAHL, Auteur ; Catarina ALMQVIST, Auteur ; Cynthia M. BULIK, Auteur Article en page(s) : p.803-812 Langues : Anglais (eng) Mots-clés : anorexia nervosa  autoimmunity  bulimia nervosa  cox regression  hazard  immune system  risk Index. décimale : PER Périodiques Résumé : BACKGROUND: Immune system dysfunction may be associated with eating disorders (ED) and could have implications for detection, risk assessment, and treatment of both autoimmune diseases and EDs. However, questions regarding the nature of the relationship between these two disease entities remain. We evaluated the strength of associations for the bidirectional relationships between EDs and autoimmune diseases. METHODS: In this nationwide population-based study, Swedish registers were linked to establish a cohort of more than 2.5 million individuals born in Sweden between January 1, 1979 and December 31, 2005 and followed up until December 2013. Cox proportional hazard regression models were used to investigate: (a) subsequent risk of EDs in individuals with autoimmune diseases; and (b) subsequent risk of autoimmune diseases in individuals with EDs. RESULTS: We observed a strong, bidirectional relationship between the two illness classes indicating that diagnosis in one illness class increased the risk of the other. In women, the diagnoses of autoimmune disease increased subsequent hazards of anorexia nervosa (AN), bulimia nervosa (BN), and other eating disorders (OED). Similarly, AN, BN, and OED increased subsequent hazards of autoimmune diseases.Gastrointestinal-related autoimmune diseases such as, celiac disease and Crohn's disease showed a bidirectional relationship with AN and OED. Psoriasis showed a bidirectional relationship with OED. The previous occurence of type 1 diabetes increased the risk for AN, BN, and OED. In men, we did not observe a bidirectional pattern, but prior autoimmune arthritis increased the risk for OED. CONCLUSIONS: The interactions between EDs and autoimmune diseases support the previously reported associations. The bidirectional risk pattern observed in women suggests either a shared mechanism or a third mediating variable contributing to the association of these illnesses. En ligne : http://dx.doi.org/10.1111/jcpp.12958 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=401 [article] Bidirectional relationship between eating disorders and autoimmune diseases [Texte imprimé et/ou numérique] / A. HEDMAN, Auteur ; L. BREITHAUPT, Auteur ; C. HUBEL, Auteur ; L. M. THORNTON, Auteur ; A. TILLANDER, Auteur ; C. NORRING, Auteur ; A. BIRGEGARD, Auteur ; H. LARSSON, Auteur ; J. F. LUDVIGSSON, Auteur ; L. SAVENDAHL, Auteur ; Catarina ALMQVIST, Auteur ; Cynthia M. BULIK, Auteur . - p.803-812. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 60-7 (July 2019) . - p.803-812 Mots-clés : anorexia nervosa  autoimmunity  bulimia nervosa  cox regression  hazard  immune system  risk Index. décimale : PER Périodiques Résumé : BACKGROUND: Immune system dysfunction may be associated with eating disorders (ED) and could have implications for detection, risk assessment, and treatment of both autoimmune diseases and EDs. However, questions regarding the nature of the relationship between these two disease entities remain. We evaluated the strength of associations for the bidirectional relationships between EDs and autoimmune diseases. METHODS: In this nationwide population-based study, Swedish registers were linked to establish a cohort of more than 2.5 million individuals born in Sweden between January 1, 1979 and December 31, 2005 and followed up until December 2013. Cox proportional hazard regression models were used to investigate: (a) subsequent risk of EDs in individuals with autoimmune diseases; and (b) subsequent risk of autoimmune diseases in individuals with EDs. RESULTS: We observed a strong, bidirectional relationship between the two illness classes indicating that diagnosis in one illness class increased the risk of the other. In women, the diagnoses of autoimmune disease increased subsequent hazards of anorexia nervosa (AN), bulimia nervosa (BN), and other eating disorders (OED). Similarly, AN, BN, and OED increased subsequent hazards of autoimmune diseases.Gastrointestinal-related autoimmune diseases such as, celiac disease and Crohn's disease showed a bidirectional relationship with AN and OED. Psoriasis showed a bidirectional relationship with OED. The previous occurence of type 1 diabetes increased the risk for AN, BN, and OED. In men, we did not observe a bidirectional pattern, but prior autoimmune arthritis increased the risk for OED. CONCLUSIONS: The interactions between EDs and autoimmune diseases support the previously reported associations. The bidirectional risk pattern observed in women suggests either a shared mechanism or a third mediating variable contributing to the association of these illnesses. En ligne : http://dx.doi.org/10.1111/jcpp.12958 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=401

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

Familial and genetic associations between autism spectrum disorder and other neurodevelopmental and psychiatric disorders / L. GHIRARDI in Journal of Child Psychology and Psychiatry, 62-11 (November 2021)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 62-11 (November 2021) . - p.1274-1284 Titre : Familial and genetic associations between autism spectrum disorder and other neurodevelopmental and psychiatric disorders Type de document : Texte imprimé et/ou numérique Auteurs : L. GHIRARDI, Auteur ; R. KUJA-HALKOLA, Auteur ; Agnieszka BUTWICKA, Auteur ; J. MARTIN, Auteur ; H. LARSSON, Auteur ; B. M. D'ONOFRIO, Auteur ; P. LICHTENSTEIN, Auteur ; M. J. TAYLOR, Auteur Article en page(s) : p.1274-1284 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/epidemiology/genetics  Cohort Studies  Comorbidity  Humans  Intellectual Disability/epidemiology/genetics  Neurodevelopmental Disorders/epidemiology/genetics  Autism spectrum disorder  family based study  genetic association  neurodevelopmental disorders Index. décimale : PER Périodiques Résumé : BACKGROUND: Familial and genetic associations between autism spectrum disorder (ASD) and other neurodevelopmental and psychiatric disorders have been reported, sometimes with conflicting results. We estimated familial and genetic associations between ASD and nine disorder groups, and explored differences in these associations for ASD in the context of intellectual disability, epilepsy, chromosomal abnormalities, and congenital malformations. METHODS: Individuals born between 1985 and 2009 living in Sweden on their seventh birthday were linked to their biological parents in order to identify different types of relatives. We retrieved information on all the disorders considered from the National Patient Register. Logistic regression was used to estimate the familial association between ASD and other neurodevelopmental and psychiatric disorders in the different groups of relatives. Structural equation modeling was used to estimate phenotypic (r(p) ) and genetic associations (r(g) ), as well as the contribution of genetic influences to r(p) . RESULTS: The study included 2,398,608 individuals. Among relatives of individuals diagnosed with ASD, there was an increased risk of the disorders considered, compared to relatives of individuals who were not diagnosed with ASD. Stronger associations were detected for ASD without any additional diagnosis of intellectual disability, epilepsy, chromosomal abnormalities, and congenital malformations. The strongest genetic correlation was estimated between ASD and other neurodevelopmental disorders (r(g)  = 0.73; 95% CI = 0.66-0.79). Moderate genetic correlations were estimated for anxiety disorders (r(g)  = 0.47; 95% CI = 0.33-0.61), depression (r(g)  = 0.52; 95% CI = 0.37-0.66), and intentional self-harm (r(g)  = 0.54; 95% CI = 0.36-0.71). CONCLUSIONS: ASD shows familial and genetic association not only with other neurodevelopmental disorders, but also with other psychiatric disorders, such as anxiety, depression, and intentional self-harm. Family history of ASD comorbid with intellectual disability, epilepsy, congenital malformations, or chromosomal abnormalities is less related to other psychiatric disorders, potentially suggesting a different etiology for this subgroup of patients. En ligne : http://dx.doi.org/10.1111/jcpp.13508 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 [article] Familial and genetic associations between autism spectrum disorder and other neurodevelopmental and psychiatric disorders [Texte imprimé et/ou numérique] / L. GHIRARDI, Auteur ; R. KUJA-HALKOLA, Auteur ; Agnieszka BUTWICKA, Auteur ; J. MARTIN, Auteur ; H. LARSSON, Auteur ; B. M. D'ONOFRIO, Auteur ; P. LICHTENSTEIN, Auteur ; M. J. TAYLOR, Auteur . - p.1274-1284. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 62-11 (November 2021) . - p.1274-1284 Mots-clés : Autism Spectrum Disorder/epidemiology/genetics  Cohort Studies  Comorbidity  Humans  Intellectual Disability/epidemiology/genetics  Neurodevelopmental Disorders/epidemiology/genetics  Autism spectrum disorder  family based study  genetic association  neurodevelopmental disorders Index. décimale : PER Périodiques Résumé : BACKGROUND: Familial and genetic associations between autism spectrum disorder (ASD) and other neurodevelopmental and psychiatric disorders have been reported, sometimes with conflicting results. We estimated familial and genetic associations between ASD and nine disorder groups, and explored differences in these associations for ASD in the context of intellectual disability, epilepsy, chromosomal abnormalities, and congenital malformations. METHODS: Individuals born between 1985 and 2009 living in Sweden on their seventh birthday were linked to their biological parents in order to identify different types of relatives. We retrieved information on all the disorders considered from the National Patient Register. Logistic regression was used to estimate the familial association between ASD and other neurodevelopmental and psychiatric disorders in the different groups of relatives. Structural equation modeling was used to estimate phenotypic (r(p) ) and genetic associations (r(g) ), as well as the contribution of genetic influences to r(p) . RESULTS: The study included 2,398,608 individuals. Among relatives of individuals diagnosed with ASD, there was an increased risk of the disorders considered, compared to relatives of individuals who were not diagnosed with ASD. Stronger associations were detected for ASD without any additional diagnosis of intellectual disability, epilepsy, chromosomal abnormalities, and congenital malformations. The strongest genetic correlation was estimated between ASD and other neurodevelopmental disorders (r(g)  = 0.73; 95% CI = 0.66-0.79). Moderate genetic correlations were estimated for anxiety disorders (r(g)  = 0.47; 95% CI = 0.33-0.61), depression (r(g)  = 0.52; 95% CI = 0.37-0.66), and intentional self-harm (r(g)  = 0.54; 95% CI = 0.36-0.71). CONCLUSIONS: ASD shows familial and genetic association not only with other neurodevelopmental disorders, but also with other psychiatric disorders, such as anxiety, depression, and intentional self-harm. Family history of ASD comorbid with intellectual disability, epilepsy, congenital malformations, or chromosomal abnormalities is less related to other psychiatric disorders, potentially suggesting a different etiology for this subgroup of patients. En ligne : http://dx.doi.org/10.1111/jcpp.13508 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456

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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Maternal infection requiring hospitalization during pregnancy and attention-deficit hyperactivity disorder in offspring: a quasi-experimental family-based study / Y. GINSBERG in Journal of Child Psychology and Psychiatry, 60-2 (February 2019)  

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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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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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