Caulkins J P
RAND, Drug Policy Research Center, Santa Monica, USA.
Addiction. 1997 Nov;92(11):1437-43.
To compare the prices of cocaine powder and crack cocaine in the United States.
Retail prices for crack and powder cocaine are compared for 14 US cities between 1986 and 1991 using regression analysis and t-tests.
Prices are estimated from the United States Drug Enforcement Administration's System to Retrieve Information from Drug Evidence (STRIDE) database.
On average, crack is neither more nor less expensive per pure unit than powder cocaine. Prices are not equal in every city in every year, but crack is equally likely to be more or less expensive, and the differences are not large relative to variation in prices of both forms of cocaine between cities and over time.
Crack has been widely believed to be cheaper than powder cocaine, and this "fact" has been used to help explain why US drug problems worsened in the 1980s. However, crack is not, in fact, cheaper per pure unit than powder cocaine. Other explanations must be sought for why crack spread so rapidly relative to powder cocaine.
比较美国可卡因粉末和快克可卡因的价格。
利用回归分析和t检验,对1986年至1991年间美国14个城市的快克可卡因和可卡因粉末的零售价格进行比较。
价格由美国缉毒局的从毒品证据中检索信息系统(STRIDE)数据库估算得出。
平均而言,每单位纯快克可卡因的价格并不比可卡因粉末更贵或更便宜。每年并非每个城市的价格都相等,但快克可卡因价格更高或更低的可能性相同,而且相对于两种形式可卡因在不同城市和不同时期的价格变化而言,差异并不大。
人们普遍认为快克可卡因比可卡因粉末便宜,这一“事实”被用来解释为何20世纪80年代美国毒品问题恶化。然而,实际上,每单位纯快克可卡因并不比可卡因粉末便宜。必须寻找其他解释来说明快克可卡因相对于可卡因粉末为何传播得如此迅速。