Genetic association study of childhood aggression across raters, instruments, and age
AbstractChildhood aggressive behavior (AGG) has a substantial heritability of around 50%. Here we present a genome-wide association meta-analysis (GWAMA) of childhood AGG, in which all phenotype measures across childhood ages from multiple assessors were included. We analyzed phenotype assessments for a total of 328 935 observations from 87 485 children aged between 1.5 and 18 years, while accounting for sample overlap. We also meta-analyzed within subsets of the data, i.e., within rater, instrument and age. SNP-heritability for the overall meta-analysis (AGGoverall) was 3.31% (SE = 0.0038). We found no genome-wide significant SNPs for AGGoverall. The gene-based analysis returned three sign…
Association of Cesarean Delivery With Risk of Neurodevelopmental and Psychiatric Disorders in the Offspring: A Systematic Review and Meta-analysis.
This systematic review and meta-analysis examines the association between birth by cesarean delivery and risk of neurodevelopmental and psychiatric disorders in the offspring compared with birth by vaginal delivery.
Much more than just shyness: the impact of social anxiety disorder on educational performance across the lifespan
AbstractBackgroundSocial anxiety disorder (SAD) has been linked to academic underachievement, but previous studies had methodological limitations. We investigated the association between SAD and objective indicators of educational performance, controlling for a number of covariates and unmeasured confounders shared between siblings.MethodsThis population-based birth cohort study included 2 238 837 individuals born in Sweden between 1973 and 1997, followed-up until 2013. Within the cohort, 15 755 individuals had a recorded ICD-10 diagnosis of SAD in the Swedish National Patient Register. Logistic regression models tested the association between SAD and educational performance. We also identi…
Attention-Deficit/Hyperactivity Disorder (ADHD), antisociality and delinquent behavior over the lifespan
Attention-Deficit/Hyperactivity Disorder (ADHD) is closely linked to the development of conduct problems during socialization in early life and to an increased risk for antisocial activities and delinquency over the lifespan. The interaction between ADHD and common comorbid disorders like substance use disorders as well as changing environmental conditions could mediate the course of antisocial and delinquent behavior with increasing age. However, this complex interaction is only partially understood so far. This review presents current knowledge about the association of ADHD with antisociality and the development of delinquent behavior. Thereby, the relationships between ADHD, conduct diso…
Insomnia in obsessive-compulsive disorder: A Swedish population-based cohort study.
Abstract Background The association between specific psychiatric disorders and insomnia is well established, but the prevalence of insomnia in obsessive-compulsive disorder (OCD) is unknown. This population-based study examined the prevalence of insomnia in patients with OCD compared to unaffected individuals from the general population and to their unaffected full siblings, and evaluated the contribution of psychiatric comorbidities to this association. Methods Individuals diagnosed with OCD (31,856) were identified from a cohort of 13,017,902 individuals living in Sweden anytime during 1973 and 2013. Logistic regression analyses were used to investigate the odds of insomnia in individuals…