 By the estimate of one study, 78% of incarcerated women have experienced a traumatic or "extreme" event as defined by DSM-III-R criteria within their lifetime, while 30% have experienced multiple symptoms of PTSD within the last six months.Following PTSD and substance abuse/dependence, depression is the third most common psychiatric disorder among incarcerated women.Depression and substance abuse, too, are closely linked with experiences of victimization or PTSD, and more so for women than for men.