Prevalence and Axis I comorbidity of full and partial posttraumatic stress disorder in the United States: Results from Wave 2 of the National Epidemiologic Survey on Alcohol and Related Conditions

▶ This study is the first to examine the prevalence and Axis I comorbidity of DSM-IV diagnosis of posttraumatic stress disorder. ▶ The lifetime prevalence of posttraumatic stress disorder (PTSD) among U.S. adults was 6.4%. ▶ An additional 6.6% of U.S. adults had subthreshold, partial PTSD in their lifetimes. ▶ Lifetime full and partial PTSD are associated with elevated rates of Axis I disorders and suicide attempt. ▶ Lifetime full and partial PTSD are related to poorer past-month psychosocial functioning.