50 Years After Political Protest Violence, Posttraumatic Growth is Associated with PTSD and Anxiety but not Depression or Sleep Difficulties.

Rates of, and relationships between, posttraumatic stress disorder (PTSD), depression, anxiety, and posttraumatic growth (PTG) decades after a single-incident trauma remain unclear. During a two-month period surrounding the 50th anniversary of the political protest violence at Kent State University on May 4, 1970, 132 individuals completed measures of PTG, PTSD, depression, anxiety, and sleep difficulties. Participants were, on average, 19 years old (SD = 3.01) on May 4, 1970, and 44% were present at the protests. 17% met cutoff scores consistent with PTG, 6% for PTSD, 8% for anxiety, 11% for depression and 20% for sleep difficulties. PTG was significantly and positively correlated with PTSD ( r  = .32, 95% CI: 0.17-0.44) and anxiety ( r  = .23, 95% CI: 0.08-0.38) but not depression or sleep difficulties after controlling for additional trauma exposure since May 4, 1970. All relationships were best explained by linear rather than curvilinear relationships and were not moderated by proximity to the events of May 4, 1970. Results indicate that clinicians working with survivors of trauma decades later may be able to capitalize on the adaptive functions of PTG to foster positive treatment outcomes.