Posttraumatic Stress Disorder diagnosis reflects DSM-IV criteria and was assessed querying PTSD symptom clusters pertaining to the traumatic event reported as most disturbing which also resulted in feelings of “intense fear, helplessness, or horror.” Individuals who reported no trauma or no disturbing feelings were coded as negative for PTSD. Among those who met full PTSD criteria, age of PTSD onset was defined as age at first symptom that lasted at least 1 month.