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OBJECTIVE Previous studies have demonstrated an increased risk for attention-deficit/hyperactivity disorder (ADHD) in follow-up studies of preterm survivors from NICUs. In this study we analyzed the effect of moderate as well as extreme preterm birth on the risk for ADHD in school age, taking into account genetic, perinatal, and socioeconomic confounders.(More)
OBJECTIVE To investigate how playing a violent/nonviolent television game during the evening affects sympathetic and parasympathetic reactions during and after playing as well as sleep quality during the night after playing. SUBJECTS AND METHODS In total, 19 boys, 12-15 years of age, played television games on two occasions in their homes and participated(More)
Regulation of the Hypothalamus-Pituitary-Adrenal axis (HPA-axis) and its end product cortisol differs among persons with certain psychiatric disorders when compared with controls. Some reports concern Attention-Deficit/Hyperactivity Disorder (ADHD) but findings are inconclusive. In this study we collected four saliva samples during a regular weekday in(More)
BACKGROUND Few large sample studies have examined psychiatric morbidity among former child welfare/protection clients. In this study, risks for suicide attempts and severe psychiatric morbidity in younger years were assessed for former child welfare clients in ten national birth cohorts, comparing them with general population peers and inter-country(More)
Pioneering legislation regarding donor insemination was introduced in Sweden in 1985. The law gives the child, upon reaching sufficient maturity, the right to obtain information about the donor and his identity. One hundred and forty-eight Swedish couples with children conceived through donor insemination after the law was introduced have answered questions(More)
Attention deficit hyperactivity disorder (ADHD) is a common developmental disorder. The present study tested the hypotheses that children with ADHD, particularly those exhibiting severe hyperactivity and impulsivity, have a different stress reaction (measured by salivary cortisol) during a dental recall visit and are more dentally anxious than children in a(More)
BACKGROUND Previous studies have shown an elevated risk for self-harm in adolescents from ethnic minorities. However, potential contributions to this risk from socio-economic factors have rarely been addressed. The main aim of this article was to investigate any such effects. METHOD A national cohort of 1009 157 children born during 1973-1982 was followed(More)
BACKGROUND Self-inflicted injury in youth has increased in many Western countries during recent decades. Education is the most influential societal determinant of living conditions in young people after early childhood. This study tested the hypothesis that school performance predicts self-inflicted injury. METHODS A national cohort of 447 929 children(More)
BACKGROUND Parental characteristics influence the risk of offspring suicide. In this study we wanted to separate the hereditary from the environmental influence of such factors by comparing their effects in the adopted versus non-adopted. METHOD A register study was conducted in a national cohort of 2,471,496 individuals born between 1946 and 1968,(More)
OBJECTIVE The authors describe obstacles to children's disclosure of their sexual abuse experiences. METHOD Ten children's descriptions of 102 incidents of sexual abuse and the process of disclosing these incidents during police interviews were studied. Children's self-reports of the abuse were compared to videotapes of the incidents made by the lone(More)