Trauma exposure history was assessed using a checklist of traumatic events adapted from the Revised Diagnostic Interview Schedule (Robins et al., 1985) used in the National Comorbidity Survey (Kessler et al., 1995). Respondent booklets were mailed prior to the interview and included a list of traumatic events. Participants were asked whether they had experienced each of the traumatic events listed in the respondent booklet and were instructed not to report the same event twice. Age at first experience of each endorsed event was queried. Traumatic experiences included childhood sexual abuse (CSA), childhood physical abuse (CPA), witnessing injury or death, life threatening accident, and natural disaster. Additional questions using behavioral descriptions of experiences consistent with childhood sexual or physical abuse were asked by the interviewer using the questions from the SSAGA with endorsement of one or more questions coded as a positive for CSA or CPA respectively (see Table 1). Ages of onset were defined as age of first reported experience for each event.
