title: Heterogeneity in youth depressive symptom trajectories: social stratification and implications for young adult physical health.
abstract: OBJECTIVE
  The first objective of this study was to investigate young adult physical health implications of adolescent depressive symptom trajectories. The second objective was to investigate the social stratification of adolescent depressive symptom trajectories.
  
  
  METHODS
  Data came from the National Longitudinal Study of Adolescent Health. The analysis included the identification of depressive symptom trajectory groups. These four groups were then compared in terms of socioeconomic characteristics and change in physical health problems, from adolescence to young adulthood.
  
  
  RESULTS
  Youth in the chronically high, increasing, and decreasing depressive symptoms groups showed significantly higher increases in physical health problems and poorer socioeconomic characteristics than did the consistently low group.
  
  
  CONCLUSIONS
  The associations of adolescent depressive symptom trajectory groups with changes in physical health provide evidence for the etiological processes through which depression influences physical health. Differing socioeconomic characteristics of depressive symptom trajectory groups suggest social stratification of trajectories.
authors.affiliation: Department of Human Development and Family Studies, Iowa State University, Ames, Iowa 50010-8296, USA. s2kas@iastate.edu
authors.forename: K A S
authors.initials: KA
authors.lastname: Wickrama
authors.forename: Thulitha
authors.initials: T
authors.lastname: Wickrama
authors.forename: Ryan
authors.initials: R
authors.lastname: Lott
mesh_terms: D000293:Adolescent; D002648:Child; D003863:Depression / Q000503:physiopathology*; D005260:Female; D006304:Health Status; D006801:Humans; D007407:Interviews as Topic; D008137:Longitudinal Studies; D008297:Male; D012923:Social Class; D014481:United States; D055815:Young Adult