Multiple epidemiological studies have demonstrated that it is relatively common to experience PTSD symptoms following PTEs (potentially traumatic events), and trauma exposure itself is relatively common. Kessler et al. (2005) found prevalence rates in the US of 7% (higher for women than men), although rates have varied as often as the methods. In Australia PTSD was found to be the most common mental disorder, with a 12-month prevalence of 6.4% (Slade et al., 2009). The cross-national European Study (ESEMeD; Alonso et al., 2004) provided an overall European lifetime prevalence of PTSD of 1.9%, although no consistent prevalence was demonstrated across participating countries. The prevalence of dissociative disorders was found to be 1–3% of the general population, conﬁrming that they are not rare (ISST-D, Chu et al., 2011). The “ . . . lack of education among clinicians about dissociation, dissociative disorders, and the effects of psychological trauma . . .” as well as clinical bias were described as reasons for failure to diagnose dissociative disorders.
(Extracted from) The Comprehensive Resource Model: Effective Therapeutic Techniques for the Healing of Complex Trauma, written by Lisa Schwarz, Frank Corrigan, Alastair Hull and Rajiv Raju, published by Routledge, 2017