Of the 96 alcoholics, 30 (32%) met DSM-IV criteria for cannabis abuse or dependence and 52 (54%) met DSM-IV criteria for abuse/dependence on other drugs including: 44 ALC participants (46%) for cocaine, 18 (19%) for amphetamine, 14 (15%) for opioid, 5 (5%) for sedative, 5 (5%) for hallucinogen, and 2 (2%) for other. No control participant met DSM-IV criteria for substance abuse or dependence. For nicotine, 53 (55%) of the 96 ALC participants were current smokers and 14 (15%) were past smokers, whereas 3 of 41 (7%) controls were current smokers and 2 (5%) were past smokers.
