The estimate of lifetime prevalence of DSM-IV PTSD-AD was 1.59% (1.49% in men and 1.68% in women). Compared with individuals with lifetime PTSD only, those with lifetime PTSD-AD were more likely to be Asian, unmarried, and having no insurance, but less likely to be female, foreign born, older than 45 years old and to have less than high school education. By contrast, compared with individuals with lifetime AD only, individuals with lifetime PTSD-AD were more likely to be female, 45–64 years old, Black or Asian, windowed, separated or divorced, and having public health insurance, but less likely to have individual income over $20,000. Compared with either those with PTSD only or those with AD only, individuals with comorbid PTSD-AD were more likely to have all types of childhood adversities (Table 1).