Using the Same Event definition for lifetime PTSD, 7.3% of the sample met diagnostic criteria according to the DSM-5 and the DSM-IV; 2.5% according to the DSM-IV, but not the DSM-5; and 1.0% according to the DSM-5, but not the DSM-IV. Thus, among the 9.8% meeting Same Event DSM-IV criteria, 75% also met the DSM-5 criteria, and 25% did not meet DSM-5 criteria. Of the 8.3% meeting Same Event DSM-5 criteria, 88% also met the DSM-IV criteria, and 12% did not meet DSM-IV criteria. Why did cases meet the DSM-IV, but not the DSM-5 criteria? Our analysis indicated that 60% of such cases occurred solely because of the revised Criterion A definition in the DSM-5 that now excludes indirect exposure due to nonviolent deaths (53% of cases discrepant with the DSM-IV and 90% of all cases that were discrepant only based on Criterion A). The remaining cases discrepant solely based on Criterion A met the DSM-5 PTSD criteria related to certain types of illness (10%). Apart from the 60% failing to meet DSM-5 criteria solely due to Criterion A, another
