Cocaine use among heroin users in Spain: the diVusion of crack and cocaine smoking (original) (raw)
Study objective—To describe the prevalence and patterns of use of crack and cocaine hydrochloride among heroin users in Spain. To explore if the expansion of heroin smoking is accompanied by a similar phenomenon for cocaine. Design—Cross sectional study in 1995. Face to face interviews using a structured questionnaire. Setting—Three cities with diVerent prevalences of heroin use by smoking: high (Seville), intermediate (Madrid), and low (Barcelona). Participants—909 heroin users, 452 in treatment and 457 out of treatment. Main results—Last month prevalence of crack use was 62.3% in Seville, 19.4% in Madrid, and 7.7% in Barcelona. Most users in Madrid (86.5%) and Barcelona (100%) generally prepared their own crack, usually with ammonia as alkali; in Seville most users (69.7%) bought preprocessed crack. The proportion of users who began taking cocaine (crack or cocaine hydrochloride) by smoking has increased progressively since the seventies, rising to 74.1% in Seville, 61.5% in Madri...
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