title: Characteristics of smoked drug use among cocaine smokers.
abstract: The authors collected data by structured interview from a convenience sample of 228 physically healthy, largely (82%) treatment-seeking, cocaine smokers with minimal histories of other smoked (other than tobacco and marijuana) or injection drug use. The vast majority of subjects also smoked either marijuana only (17.5%), tobacco only (17%), or both (61%), with onset of such smoking almost always (97%) preceding the initiation of regular cocaine smoking. There were few significant differences in sociodemographic or cocaine use characteristics among the subgroups of subjects smoking either cocaine only or cocaine and marijuana and/or tobacco. More than one-third of marijuana smokers quit (45%) or decreased (38%) their use after starting regular cocaine smoking, whereas only 5% of tobacco smokers did so. These findings suggest that marijuana smoking is more influenced by regular cocaine smoking than is tobacco smoking.
authors.affiliation: National Institutes of Health/National Institute on Drug Abuse, Division of Intramural Research, Baltimore, MD 21224-0180, USA.
authors.forename: D A
authors.initials: DA
authors.lastname: Gorelick
authors.forename: M S
authors.initials: MS
authors.lastname: Simmons
authors.forename: N
authors.initials: N
authors.lastname: Carriero
authors.forename: D P
authors.initials: DP
authors.lastname: Tashkin
mesh_terms: D000328:Adult; D016578:Crack Cocaine; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008385:Marijuana Smoking / Q000523:psychology*; D008875:Middle Aged; D012307:Risk Factors; D012907:Smoking / Q000523:psychology
chemical_list: D016578:Crack Cocaine