Identifying longitudinal trajectories of injured trauma survivors with posttraumatic stress disorder

Janyce Emily Osenbach, Fordham University


The goal of this study was to examine the developmental trajectories of posttraumatic stress disorder, or PTSD, in a sample of acutely injured hospitalized civilian trauma survivors who participated in a randomized controlled trial. Prior research has shown that there are distinct trajectories of Posttraumatic Stress symptoms over time in trauma survivors and four prototypical outcome trajectories after loss or trauma have been described: resilience, recovery, delayed, and chronic trajectories (Bonanno, 2004). Studies have shown that seriously injured trauma-exposed patients who require extended inpatient hospital care may be at the highest risk for PTSD development. However, limited information has been provided not only regarding the patterns of the trajectories for this population, but for the risk factors that influence the trajectories as well. Semiparametric, group based approach (SGBA) trajectory modeling was used to examine four group trajectories of archival data obtained from a previous study of a stepped care intervention. Data evaluating PTSD from the Posttraumatic Checklist – Civilian Version (PCL-C) and the Clinician-Administered Posttraumatic Stress Disorder Scale (CAPS) measures were used for the SGBA trajectory modeling. Risk factor assessment was conducted by contrasting the probability of membership in the recovery, delayed, and chronic trajectory groups to the probability of membership in the resilience trajectory group. The risk factors of minority racial status, psychiatric history, additional life stressors, general mental health, alcohol abuse or dependence, and depression were found to significantly affect the probability of trajectory membership for PTSD symptom severity.

Subject Area

Psychology|Clinical psychology|Quantitative psychology

Recommended Citation

Osenbach, Janyce Emily, "Identifying longitudinal trajectories of injured trauma survivors with posttraumatic stress disorder" (2012). ETD Collection for Fordham University. AAI3543387.