title: [Symptoms of anxiety in adolescents. Findings from the TRAILS-study].
abstract: BACKGROUND
  The Dutch TRAILS-study focuses on development from early adolescence into adulthood. An important aspect of this development is the development of anxiety. Hitherto little has been known about typical development of symptoms of anxiety during adolescence.
  
  
  OBJECTIVE
  To describe both the normative development of anxiety during adolescence, and the risk indicators for high levels of anxiety in adolescents.
  
  
  METHODS
  Studies were embedded in trails, a large cohort study that followed children from the age of 10 to adulthood.
  
  
  RESULTS
  Our results showed that, on average, levels of anxiety decrease in early adolescence and subsequently increase in middle or late adolescence, depending on the subtype of anxiety involved. Child-, parent- and peer-factors at age 10-12 years were related to higher subsequent anxiety levels. Some factors, such as the style of upbringing, were related to higher anxiety levels solely in early adolescence, whereas other factors such as being bullied by peers were related to continuing higher anxiety levels throughout adolescence, irrespective of later victimisation.
  
  
  CONCLUSIONS
  Our study should, we hope, lead to a better understanding of the normative development of anxiety in the general adolescent population.
authors.affiliation: Erasmus MC-Sophia, Rotterdam. f.vanoort@erasmusmc.nl
authors.forename: F V A
authors.initials: FV
authors.lastname: van Oort
authors.forename: J
authors.initials: J
authors.lastname: Ormel
authors.forename: F C
authors.initials: FC
authors.lastname: Verhulst
mesh_terms: D000293:Adolescent; D000296:Adolescent Psychiatry; D001007:Anxiety / Q000175:diagnosis* / Q000453:epidemiology; D058445:Bullying / Q000523:psychology; D002648:Child; D054541:Family Conflict / Q000523:psychology; D005260:Female; D006801:Humans; D007389:Internal-External Control; D008297:Male; D016487:Parenting / Q000523:psychology; D015995:Prevalence; D012059:Rejection, Psychology; D018570:Risk Assessment; D012307:Risk Factors; D012649:Self Concept; D012933:Social Identification