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Published on: March 8, 2018
Relations among peritraumatic dissociation and posttraumatic stress: a meta-analysis
Gerty Lensvelt-Mulders1, Onno van der Hart, Jacobien M van Ochten
1Department of Methodology and Statistics, Utrecht University, PO-Box 80140, 3508 TC Utrecht, The Netherlands. g.j.l.m.lensvelt@uu.nl
Peritraumatic dissociation is significantly linked to posttraumatic stress (PTS). Methodological factors, not theoretical ones, explain variations in findings, but causality remains undetermined.
Area of Science:
- Psychology
- Psychiatry
- Trauma Studies
Background:
- Peritraumatic dissociation is a phenomenon occurring during a traumatic event.
- Its relationship with posttraumatic stress (PTS) requires further investigation.
- Understanding this link is crucial for trauma-informed care.
Purpose of the Study:
- To systematically analyze the empirical literature on peritraumatic dissociation and posttraumatic stress (PTS).
- To quantify the association between peritraumatic dissociation and the development of PTS.
- To identify factors influencing the variability in reported effect sizes.
Main Methods:
- A comprehensive meta-analysis of 59 independent empirical studies.
- Inclusion of studies examining the relationship between peritraumatic dissociation and PTS.
- Coding of studies for effect measures, methodological quality, and theoretical variables.
Main Results:
- A significant positive correlation was identified between peritraumatic dissociation and PTS.
- Methodological rigor, time since trauma, study design, and sample type explained effect size variability.
- Theoretical variables did not account for the observed differences in effect sizes.
Conclusions:
- The findings reinforce the established association between peritraumatic dissociation and PTS.
- Methodological heterogeneity significantly impacts the observed relationship.
- The current evidence, based on study designs, does not permit causal inferences.
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