Most people exposed to a major traumatic event do not develop Post-Traumatic Stress Disorder (PTSD), nor is PTSD passed through genetics (Yehuda, Bierer, 2009). There is no rhyme or reason as to who gets PTSD and who does not. To make things worse, experts find evidence to support some risk factors, while others fail to find supporting evidence of the same factors. One aspect majority agreed upon is dose-response (Dead Link Removed), as this encompasses multiple factors.
Dose-response refers to the longevity and compounding severity of trauma exposure. For example, in the United States, lifetime trauma exposure is 50-60%, PTSD prevalence is 7.8%; in Algeria, trauma exposure is 92%, PTSD prevalence is 37.4%. Dose-response association...