Adversity and psychosis: a 10-year prospective study investigating synergism between early and recent adversity in psychosis

J. Lataster, I. Myin-Germeys*, R. Lieb, H. -U. Wittchen, J. van Os

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

73 Citations (Web of Science)

Abstract

Objective: Recent studies have suggested that early adverse events, such as childhood trauma, may promote enduring liability for psychosis whereas more recent adverse events may act as precipitants. Examination of these environmental dynamics, however, requires prospective studies in large samples. This study examines whether the association between recent adverse events and psychosis is moderated by exposure to early adversity. Method: A random regional representative population sample of 3021 adolescents and young adults in Munich, Germany, was assessed three times over a period of up to 10 years, collecting information on sociodemographic factors, environmental exposures, and measures of psychopathology and associated clinical relevance. Evidence of statistical non-additivity between early adversity (two levels) and more recent adversity (four levels) was assessed in models of psychotic symptoms. Analyses were a priori corrected for age, gender, cannabis use, and urbanicity. Results: Early and recent adversity were associated with each other (RR = 1.32, 95% CI 1.06-1.66; P = 0.014) and displayed statistical non-additivity at the highest level of exposure to recent adversity (chi(2) = 4.59; P = 0.032). Conclusion: The findings suggest that early adversity may impact on later expression of psychosis either by increasing exposure to later adversity and/or by rendering individuals more sensitive to later adversity if it is severe.
Original languageEnglish
Pages (from-to)388-399
JournalActa Psychiatrica Scandinavica
Volume125
Issue number5
DOIs
Publication statusPublished - May 2012

Keywords

  • childhood trauma
  • life events
  • adversity
  • psychosis
  • schizophrenia

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