|Benefit-Cost Summary Statistics Per Participant|
|Taxpayers||$4,113||Benefits minus costs||$10,811|
|Participants||$8,876||Benefit to cost ratio||$19.41|
|Others||$393||Chance the program will produce|
|Indirect||($1,985)||benefits greater than the costs||91 %|
|Net program cost||($587)|
|Benefits minus cost||$10,811|
|Meta-Analysis of Program Effects|
|Outcomes measured||Treatment age||No. of effect sizes||Treatment N||Adjusted effect sizes(ES) and standard errors(SE) used in the benefit - cost analysis||Unadjusted effect size (random effects model)|
|First time ES is estimated||Second time ES is estimated|
Cannabis use disorder
Clinical diagnosis of cannabis use disorder or symptoms measured on a validated scale.
|Detailed Monetary Benefit Estimates Per Participant|
|Affected outcome:||Resulting benefits:1||Benefits accrue to:|
|Cannabis use disorder||Labor market earnings associated with cannabis abuse or dependence||$3,748||$8,803||$0||($1,874)||$10,677|
|Health care associated with cannabis abuse or dependence||$366||$73||$393||$183||$1,015|
|Program cost||Adjustment for deadweight cost of program||$0||$0||$0||($294)||($294)|
|Detailed Annual Cost Estimates Per Participant|
|Annual cost||Year dollars||Summary|
|Program costs||$822||2013||Present value of net program costs (in 2018 dollars)||($587)|
|Comparison costs||$280||2013||Cost range (+ or -)||10 %|
Benefits Minus Costs
Benefits by Perspective
Taxpayer Benefits by Source of Value
|Benefits Minus Costs Over Time (Cumulative Discounted Dollars)|
|The graph above illustrates the estimated cumulative net benefits per-participant for the first fifty years beyond the initial investment in the program. We present these cash flows in discounted dollars. If the dollars are negative (bars below $0 line), the cumulative benefits do not outweigh the cost of the program up to that point in time. The program breaks even when the dollars reach $0. At this point, the total benefits to participants, taxpayers, and others, are equal to the cost of the program. If the dollars are above $0, the benefits of the program exceed the initial investment.|
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Carroll, K.M., Easton, C.J., Nich, C., Hunkele, K.A., Neavins, T.M., Sinha, R., . . . Rounsaville, B.J. (2006). The use of contingency management and motivational/skills-building therapy to treat young adults with marijuana dependence. Journal of Consulting and Clinical Psychology, 74(5), 955-966.
Copeland, J., Swift, W., Roffman, R., & Stephens, R. (2001). A randomized controlled trial of brief cognitive-behavioral interventions for cannabis use disorder. Journal of Substance Abuse Treatment, 21(2), 55-64.
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Stephens, R.S., Roffman, R.A., & Curtin, L. (2000). Comparison of extended versus brief treatments for marijuana use. Journal of Consulting and Clinical Psychology, 68(5), 898-908.