Darke S, Hall W
National Drug and Alcohol Research Centre, University of New South Wales, Australia.
Drug Alcohol Depend. 1995 Oct;39(3):231-5. doi: 10.1016/0376-8716(95)01171-9.
Data from a sample of 329 primary heroin users and from a sample of 301 regular amphetamine users were analysed in order to determine the extent and correlates of polydrug use among illicit drug users. Both samples exhibited high levels of polydrug use, with means of 5.2 (heroin) and 6.3 (amphetamines) drug classes used in the preceding 6 months. Multi-variate analyses indicated that being younger, being male, not being in treatment, being an injector, having recently borrowed injecting equipment and being from the regular amphetamine using sample were independently associated with higher levels of polydrug use. Rather than increasing levels of polydrug use being associated with age, illicit drug users appear to reduce their range of drugs as they get older. The 'pure' heroin or amphetamine user was extremely rare. It is concluded that to characterise drug users as 'heroin' or 'amphetamine' users misses the context in which these drugs are used.
对329名原发性海洛因使用者样本和301名常规苯丙胺使用者样本的数据进行了分析，以确定非法药物使用者中多药使用的程度及其相关因素。两个样本均显示出较高的多药使用水平，在前6个月内使用的药物种类平均数分别为5.2种（海洛因）和6.3种（苯丙胺）。多变量分析表明，年龄较小、男性、未接受治疗、注射吸毒者、最近借用过注射设备以及来自常规苯丙胺使用者样本与较高的多药使用水平独立相关。非法药物使用者似乎并非随着年龄增长而增加多药使用水平，而是减少其使用药物的种类。“纯粹”的海洛因或苯丙胺使用者极为罕见。得出的结论是，将吸毒者描述为“海洛因”或“苯丙胺”使用者忽略了这些药物使用的背景情况。
