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

<p>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).</p><p>A, Asian; B, Black; F, female; H, Hispanic; M, male; <i>N/A</i>, not applicable; ns, non-significant; SD, standard deviation; W, white.</p>1<p>Day of scan only; ²two-sample <i>t</i>-test CCD versus FCD only.</p><p>C, Current; P, Past; USD, United States dollars; <i>N/A</i>, not applicable; PCP, phencyclidine; PTSD, post traumatic stress disorder; SI, substance induced.