Cost Effectiveness of Treatment vs. Law Enforcement in Reducing Substance Use

Effect of Control Programs on the Number of Cocaine Users
Control Program Cost of a 1% Decrease

in Cocaine Users per year

Ratio of Program Cost

to Treatment Cost

Source-country control $2,062,000,000 13.3
Interdiction 964,000,000 6.2
Domestic enforcement 675,000,000 4.4
Treatment 155,000,000 +1.0
Source: 

Rydell, C.P. & Everingham, S.S., Controlling Cocaine, Prepared for the Office of National Drug Control Policy and the United States Army (Santa Monica, CA: Drug Policy Research Center, RAND Corporation, 1994), p. 36.
http://www.rand.org/pubs/monog...