Subjects with drug dependence in adulthood, by substance†.

†Some subjects were found to be dependent on more than one substance. A total of 18 ADHD cases and 5 controls were dependent on substances other than marijuana.‡Includes heroin, morphine, Dilaudid, opium, Demerol, methadone, codeine, Percodan, Darvon, OxyContin.*Includes quaalude, Seconal (“reds”), Valium, Xanax, Librium, Ativan, Dalmane, Halcion, barbituates, Miltown.††Includes LSD (“acid”), mescaline, peyote, PCP (“Angel dust”, “peace pill”), psilocybin, STP, “mushrooms”, ecstasy, MDA, MDMA.Subjects with drug dependence in adulthood, by substance†.