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Commentary: How can family-based quasi-experimental designs and national registers be used to address confounding in risk factor studies of psychopathology? A reflection on Obel et al. (2016) / Henrik LARSSON in Journal of Child Psychology and Psychiatry, 57-4 (April 2016)
[article]
Titre : Commentary: How can family-based quasi-experimental designs and national registers be used to address confounding in risk factor studies of psychopathology? A reflection on Obel et al. (2016) Type de document : Texte imprimé et/ou numérique Auteurs : Henrik LARSSON, Auteur Article en page(s) : p.538-539 Langues : Anglais (eng) Mots-clés : Risk factors familial confounding maternal smoking smoking during pregnancy sibling-comparisons Index. décimale : PER Périodiques Résumé : Standard observational studies have reported a robust correlation between maternal smoking during pregnancy and risk of ADHD in offspring. In the accompanying article, Obel et al. used sibling-comparisons to explore the extent to which unmeasured familial confounding explains this association. This commentary highlights three important implications of the study. At a general level, Obel et al. illustrates how (1) family-based quasi-experimental designs and (2) national registers can be used to address confounding in risk factor studies of psychopathology. At a more specific level, the study suggests that maternal smoking during pregnancy is probably not a causal risk factor for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12519 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285
in Journal of Child Psychology and Psychiatry > 57-4 (April 2016) . - p.538-539[article] Commentary: How can family-based quasi-experimental designs and national registers be used to address confounding in risk factor studies of psychopathology? A reflection on Obel et al. (2016) [Texte imprimé et/ou numérique] / Henrik LARSSON, Auteur . - p.538-539.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 57-4 (April 2016) . - p.538-539
Mots-clés : Risk factors familial confounding maternal smoking smoking during pregnancy sibling-comparisons Index. décimale : PER Périodiques Résumé : Standard observational studies have reported a robust correlation between maternal smoking during pregnancy and risk of ADHD in offspring. In the accompanying article, Obel et al. used sibling-comparisons to explore the extent to which unmeasured familial confounding explains this association. This commentary highlights three important implications of the study. At a general level, Obel et al. illustrates how (1) family-based quasi-experimental designs and (2) national registers can be used to address confounding in risk factor studies of psychopathology. At a more specific level, the study suggests that maternal smoking during pregnancy is probably not a causal risk factor for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12519 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285 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)
[article]
Titre : Maternal infection requiring hospitalization during pregnancy and attention-deficit hyperactivity disorder in offspring: a quasi-experimental family-based study Type de document : Texte imprimé et/ou numérique Auteurs : Y. GINSBERG, Auteur ; B. M. D'ONOFRIO, Auteur ; M. E. RICKERT, Auteur ; Q. A. CLASS, Auteur ; M. A. ROSENQVIST, Auteur ; Catarina ALMQVIST, Auteur ; P. LICHTENSTEIN, Auteur ; H. LARSSON, Auteur Article en page(s) : p.160-168 Langues : Anglais (eng) Mots-clés : Maternal infection during pregnancy attention-deficit/hyperactivity disorder cousin comparisons familial confounding quasi-experimental sibling comparisons Index. décimale : PER Périodiques Résumé : BACKGROUND: Maternal infection during pregnancy (IDP) has been associated with increased risk of attention-deficit/hyperactivity disorder (ADHD) in offspring. However, infection is associated with social adversity, poor living conditions and other background familial factors. As such, there is a need to rule out whether the observed association between maternal IDP and ADHD might be attributed to such confounding. METHODS: This nationwide population-based cohort study using a family-based, quasi-experimental design included 1,066,956 individuals born in Sweden between 1992 and 2002. Data on maternal IDP (bacterial or viral) requiring hospitalization and ADHD diagnosis in offspring were gathered from Swedish National Registers, with individuals followed up through the end of 2009. Ordinary and stratified Cox regression models were used for estimation of hazard ratios (HRs) and several measured covariates were considered. Cousin- and sibling-comparisons accounted for unmeasured genetic and environmental factors shared by cousins and siblings. RESULTS: In the entire population, maternal IDP was associated with ADHD in offspring (HR = 2.31, 95% CI = 2.04-2.61). This association was attenuated when accounting for measured covariates (HR = 1.86, 95% CI = 1.65-2.10). The association was further attenuated when adjusting for unmeasured factors shared between cousins (HR = 1.52, 95% CI = 1.12-2.07). Finally, the association was fully attenuated in sibling comparisons (HR = 1.03, 95% CI = 0.76-1.41). CONCLUSIONS: This study suggests that the association between maternal IDP and offspring ADHD is largely due to unmeasured familial confounding. Our results underscore the importance of adjusting for unobserved familial risk factors when exploring risk factors for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12959 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=381
in Journal of Child Psychology and Psychiatry > 60-2 (February 2019) . - p.160-168[article] Maternal infection requiring hospitalization during pregnancy and attention-deficit hyperactivity disorder in offspring: a quasi-experimental family-based study [Texte imprimé et/ou numérique] / Y. GINSBERG, Auteur ; B. M. D'ONOFRIO, Auteur ; M. E. RICKERT, Auteur ; Q. A. CLASS, Auteur ; M. A. ROSENQVIST, Auteur ; Catarina ALMQVIST, Auteur ; P. LICHTENSTEIN, Auteur ; H. LARSSON, Auteur . - p.160-168.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 60-2 (February 2019) . - p.160-168
Mots-clés : Maternal infection during pregnancy attention-deficit/hyperactivity disorder cousin comparisons familial confounding quasi-experimental sibling comparisons Index. décimale : PER Périodiques Résumé : BACKGROUND: Maternal infection during pregnancy (IDP) has been associated with increased risk of attention-deficit/hyperactivity disorder (ADHD) in offspring. However, infection is associated with social adversity, poor living conditions and other background familial factors. As such, there is a need to rule out whether the observed association between maternal IDP and ADHD might be attributed to such confounding. METHODS: This nationwide population-based cohort study using a family-based, quasi-experimental design included 1,066,956 individuals born in Sweden between 1992 and 2002. Data on maternal IDP (bacterial or viral) requiring hospitalization and ADHD diagnosis in offspring were gathered from Swedish National Registers, with individuals followed up through the end of 2009. Ordinary and stratified Cox regression models were used for estimation of hazard ratios (HRs) and several measured covariates were considered. Cousin- and sibling-comparisons accounted for unmeasured genetic and environmental factors shared by cousins and siblings. RESULTS: In the entire population, maternal IDP was associated with ADHD in offspring (HR = 2.31, 95% CI = 2.04-2.61). This association was attenuated when accounting for measured covariates (HR = 1.86, 95% CI = 1.65-2.10). The association was further attenuated when adjusting for unmeasured factors shared between cousins (HR = 1.52, 95% CI = 1.12-2.07). Finally, the association was fully attenuated in sibling comparisons (HR = 1.03, 95% CI = 0.76-1.41). CONCLUSIONS: This study suggests that the association between maternal IDP and offspring ADHD is largely due to unmeasured familial confounding. Our results underscore the importance of adjusting for unobserved familial risk factors when exploring risk factors for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12959 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=381 Childhood Neurodevelopmental Disorders and Violent Criminality: A Sibling Control Study / Sebastian LUNDSTROM in Journal of Autism and Developmental Disorders, 44-11 (November 2014)
[article]
Titre : Childhood Neurodevelopmental Disorders and Violent Criminality: A Sibling Control Study Type de document : Texte imprimé et/ou numérique Auteurs : Sebastian LUNDSTROM, Auteur ; Mats FORSMAN, Auteur ; Henrik LARSSON, Auteur ; Nora KEREKES, Auteur ; Eva SERLACHIUS, Auteur ; Niklas LANGSTROM, Auteur ; Paul LICHTENSTEIN, Auteur Article en page(s) : p.2707-2716 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders Attention deficit hyperactivity disorder Neurodevelopmental disorders Criminality Familial confounding Index. décimale : PER Périodiques Résumé : The longitudinal relationship between attention deficit hyperactivity disorder (ADHD) and violent criminality has been extensively documented, while long-term effects of autism spectrum disorders (ASDs), tic disorders (TDs), and obsessive compulsive disorder (OCD) on criminality have been scarcely studied. Using population-based registers of all child and adolescent mental health services in Stockholm, we identified 3,391 children, born 1984–1994, with neurodevelopmental disorders, and compared their risk for subsequent violent criminality with matched controls. Individuals with ADHD or TDs were at elevated risk of committing violent crimes, no such association could be seen for ASDs or OCD. ADHD and TDs are risk factors for subsequent violent criminality, while ASDs and OCD are not associated with violent criminality. En ligne : http://dx.doi.org/10.1007/s10803-013-1873-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241
in Journal of Autism and Developmental Disorders > 44-11 (November 2014) . - p.2707-2716[article] Childhood Neurodevelopmental Disorders and Violent Criminality: A Sibling Control Study [Texte imprimé et/ou numérique] / Sebastian LUNDSTROM, Auteur ; Mats FORSMAN, Auteur ; Henrik LARSSON, Auteur ; Nora KEREKES, Auteur ; Eva SERLACHIUS, Auteur ; Niklas LANGSTROM, Auteur ; Paul LICHTENSTEIN, Auteur . - p.2707-2716.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 44-11 (November 2014) . - p.2707-2716
Mots-clés : Autism spectrum disorders Attention deficit hyperactivity disorder Neurodevelopmental disorders Criminality Familial confounding Index. décimale : PER Périodiques Résumé : The longitudinal relationship between attention deficit hyperactivity disorder (ADHD) and violent criminality has been extensively documented, while long-term effects of autism spectrum disorders (ASDs), tic disorders (TDs), and obsessive compulsive disorder (OCD) on criminality have been scarcely studied. Using population-based registers of all child and adolescent mental health services in Stockholm, we identified 3,391 children, born 1984–1994, with neurodevelopmental disorders, and compared their risk for subsequent violent criminality with matched controls. Individuals with ADHD or TDs were at elevated risk of committing violent crimes, no such association could be seen for ASDs or OCD. ADHD and TDs are risk factors for subsequent violent criminality, while ASDs and OCD are not associated with violent criminality. En ligne : http://dx.doi.org/10.1007/s10803-013-1873-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241