It is also clear that our strategy for assessing PTSD differed from that used in other studies comparing PTSD diagnoses using the DSM-IV and the DSM-5 criteria (e.g., Calhoun et al., 2012; Elhai et al., 2012). This includes the fact that methods in the current study allowed for assessment of PTSD to any qualifying traumatic event rather than to a single index event (and/or subset of worst or randomly selected event as in other epidemiological reports). Also, it is reasonable to assume that differences in how the new and modified DSM-5 Criterion A events and symptoms were worded and measured may have accounted for some of the differences in PTSD prevalence found. Also, differences in samples and patterns of exposure to traumatic events across studies are likely to have contributed to PTSD-prevalence differences based on the DSM-5 criteria. However, the current sample was more representative of the general population than samples used in these previous studies, and Criterion A events and symptoms were measured using language reviewed by the DSM-5 Sub-work Group to operationalize the PTSD diagnosis. We also compared
