|Benefit-Cost Summary Statistics Per Participant|
|Taxpayers||$1,606||Benefits minus costs||($5,827)|
|Participants||($117)||Benefit to cost ratio||$0.28|
|Others||$3,973||Chance the program will produce|
|Indirect||($3,228)||benefits greater than the costs||24 %|
|Net program cost||($8,061)|
|Benefits minus cost||($5,827)|
|Detailed Monetary Benefit Estimates Per Participant|
|Benefits from changes to:1||Benefits to:|
|K-12 grade repetition||$3||$0||$0||$1||$4|
|K-12 special education||$35||$0||$0||$17||$52|
|Labor market earnings associated with cannabis abuse or dependence||$27||$60||$0||$0||$88|
|Health care associated with cannabis abuse or dependence||$79||$24||$97||$40||$239|
|Costs of higher education||($134)||($201)||($60)||($67)||($462)|
|Adjustment for deadweight cost of program||$0||$0||$0||($4,017)||($4,018)|
|Detailed Annual Cost Estimates Per Participant|
|Annual cost||Year dollars||Summary|
|Program costs||$6,168||2001||Present value of net program costs (in 2016 dollars)||($8,061)|
|Comparison costs||$0||2001||Cost range (+ or -)||10 %|
|Estimated Cumulative Net Benefits Over Time (Non-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 non-discounted dollars to simplify the “break-even” point from a budgeting perspective. 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.|
|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||14||6||251||-0.308||0.128||17||0.000||0.187||20||-0.308||0.016|
|Externalizing behavior symptoms||14||4||346||-0.145||0.084||17||-0.069||0.052||20||-0.145||0.085|
|Grade point average^||14||1||40||0.168||0.301||17||0.168||0.301||20||0.168||0.577|
Henderson, C.E., Dakof, G.A., Liddle, H.A., & Greenbaum, P.E. (2010). Effectiveness of multidimensional family therapy with higher severity substance-abusing adolescents: Report from two randomized controlled trials. Journal of Consulting and Clinical Psychology, 78(6), 885-897.
Hendriks, V., van, . S.E., & Blanken, P. (2011). Treatment of adolescents with a cannabis use disorder: Main findings of a randomized controlled trial comparing multidimensional family therapy and cognitive behavioral therapy in The Netherlands. Drug and Alcohol Dependence, 119, 64-71.
Liddle, H.A., Dakof, G.A., Parker, K., Diamond, G.S., Barrett, K., & Tejeda, M. (2001) Multidimensional family therapy for adolescent drug abuse: Results of a randomized clinical trial. American Journal of Drug Abuse, 27(4), 651-688.
Liddle, H.A., Rowe, C.L., Dakof, G.A., Henderson, C.E., & Greenbaum, P.E. (2009). Multidimensional Family Therapy for young adolescent substance abuse: Twelve-month outcomes of a randomized controlled trial. Journal of Consulting and Clinical Psychology, 77(1), 12-25.
Liddle, H.A., Dakof, G.A., Turner, R.M., Henderson, C.E., & Greenbaum, P.E. (2008). Treating adolescent drug abuse: A randomized trial comparing multidimensional family therapy and cognitive behavior therapy. Addiction, 103(10), 1660-1670.
Rigter, H., Henderson, C.E., Pelc, I., Tossmann, P., Phan, O., Hendriks, V., Schaub, M., ... Rowe, C.L. (2013). Multidimensional family therapy lowers the rate of cannabis dependence in adolescents: a randomised controlled trial in Western European outpatient settings. Drug and Alcohol Dependence, 130, 1-3.