title: Secular changes in the relation between social factors and depression: a study of two birth cohorts of Swedish septuagenarians followed for 5 years.
abstract: BACKGROUND
  Rapid societal changes occurred in the Western world during the 20(th) century. It is not clear whether this has changed the relation between social factors and depression in older people.
  
  
  METHODS
  Representative samples of 70-year-olds from Gothenburg, Sweden, were examined with identical psychiatric examinations in 1971-72 (N=392; 226 women and 166 men) and 2000-01 (N=499; 270 women and 229 men). Follow-up studies were conducted after five years. Social factors were obtained by self-report and depression was diagnosed according to DSM-IV-TR.
  
  
  RESULTS
  Feelings of loneliness were related to both concurrent depression at baseline and new depression at follow-up in both birth cohorts. Visits with others than children and neighbours once per month or less, compared to having more visits, and the perception of having too little contact with others, were related to both concurrent and new depression in 70-year-olds examined 1971-72, but not in those examined 30 years later.
  
  
  CONCLUSIONS
  The response rate declined from 85.2% in 1971-72 to 65.8% in 2000-01. Participation bias may have resulted in an underestimation of depression in the later-born cohort.
  
  
  CONCLUSIONS
  Social contacts with others were related to depression in 70-year-olds examined in the 1970s, but not in those examined in the 2000s. This may reflect period changes in the ways of socialising, communicating and entertaining, e.g. due to technological development and expansion of mass media. Findings may be useful when developing modern and effective programs for the prevention of mental ill-health in older people.
authors: Neuropsychiatric Epidemiology Unit, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. Linnea.Sjoberg@neuro.gu.se
authors: Linnea
authors: L
authors: Sjöberg
authors: Svante
authors: S
authors: Östling
authors: Hanna
authors: H
authors: Falk
authors: Valter
authors: V
authors: Sundh
authors: Margda
authors: M
authors: Waern
authors: Ingmar
authors: I
authors: Skoog
mesh_terms: D002648:Child; D003863:Depression / Q000523:psychology*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008132:Loneliness / Q000523:psychology*; D008297:Male; D012919:Social Behavior; D013548:Sweden / Q000453:epidemiology
keywords: Cohort differences; Depression; Epidemiology; Incidence; Old age; Psychosocial