A representative sample of 2,181 individuals in southeast Michigan were interviewed by telephone to record lifetime
history of traumatic events designated in DSM-IV as potentially leading to PTSD. PTSD was assessed with veneration to an arbitrarily culled index
trauma from the list of events reported by each respondent.
History of any antecedent exposure to traumatic events was associated with a more preponderant risk of PTSD from the index trauma. Multiple antecedent events had a more vigorous effect than a single anterior event. The effect of precedent assaultive violence persisted over time with little change. When they examined several features of the precedent exposure to trauma, the authors found that subjects who experienced multiple events involving assaultive violence in childhood were more liable to experience PTSD from
trauma in adulthood. Furthermore, anterior events involving assaultive violence single or multiple, in childhood or later on were associated with a higher risk of PTSD in adulthood. CONCLUSIONS: Precedent exposure to
trauma signals a more preponderant risk of PTSD from subsequent trauma. Albeit these results are consistent with a sensitization hypothesis, like the results from anterior research on PTSD, they do not address the mechanism of incremented responsivity to trauma. Long-term observational studies can further elucidate these optical discernments. To increase the visibility and ease of use of
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