Additionally , many pregnant women with substance abuse have concomitant psychiatric illnesses(56 percent to 76 percent; Unger,Metz&Fischer,2012) and have experienced high rates of trauma and sexual abuse in their past (39 percent), have histories of intimate partner violence (25 percent to 88 percent) and have histories of participating in sextrafficking and prostitution to support their substance abuse (32 percent; Jones & Fiellin, 2007)