Demographics, Drug Usage and Axis-I SCID data for HC, FCD and CCD groups.

The DSM-IV diagnosis for current or past drug dependence or abuse is demarcated by a forward slash (e.g., 27/3 indicates 27 diagnosed with dependence and 3 with abuse of the given drug). A, Asian; B, Black; F, female; H, Hispanic; M, male; N/A, not applicable; ns, non-significant; SD, standard deviation; W, white. 1Day of scan only; 2two-sample t-test CCD versus FCD only. C, Current; P, Past; USD, United States dollars; N/A, not applicable; PCP, phencyclidine; PTSD, post traumatic stress disorder; SI, substance induced.