title: [Prospective study on dynamics of depression in mid-adolescence].
abstract: OBJECTIVE
  The aim of the study is an evaluation of the occurrence and dynamics of depression during mid-adolescence. It was conducted in prospective studies on a representative group of gymnasium school adolescents in large towns.
  
  
  METHODS
  In a two-stage draw, a representative group of 1737, 13 year-old adolescents was chosen. They were surveyed by the Krakow Depression Inventory (KID) subsequently in the years 2001, 2002, 2003.
  
  
  RESULTS
  The point-prevalence of depression was respectively 24.6%, 24.5% and 26.6% for 13, 14 and 15 year-olds. The spread-out rate of depressive disorder in the studied group turned out to be relatively stable.
  
  
  CONCLUSIONS
  Depression is more common amongst mid-adolescent girls than boys. Dynamics of the disorder, when studied throughout the three years show that amongst the mid-adolescent population, depression is a disorder of an unequivocal nature.
authors.affiliation: Klinika Psychiatrii Dzieci i Młodziezy CM UJ, Kraków.
authors.forename: Jacek
authors.initials: J
authors.lastname: Bomba
authors.forename: Renata
authors.initials: R
authors.lastname: Modrzejewska
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D017677:Age Distribution; D001294:Attitude to Health; D015331:Cohort Studies; D003863:Depression / Q000175:diagnosis* / Q000453:epidemiology*; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D011044:Poland / Q000453:epidemiology; D015995:Prevalence; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D000297:Psychology, Adolescent; D012307:Risk Factors; D012720:Severity of Illness Index; D017678:Sex Distribution; D012931:Social Environment; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology; D011795:Surveys and Questionnaires