Table 1.
Study/N | Inclusion Criteria/Setting |
Platform | Control Incentives |
Parent Participation in CM |
CM Target | Monitoring Schedule |
Incentive Schedule |
Incentive Magnitude |
Incentive Type | Trial Outcome |
---|---|---|---|---|---|---|---|---|---|---|
Killeen et al. 2012 (N=31) |
Cannabis use + diagnosis/Outpatient |
Community care, 12-step, group |
Yes | No | Abstinence | 2×/week UA for 10 weeks |
Escalating with reset |
$5832 | Fishbowl/prize cabinet |
Negative: CM=control; both conditions improved |
Kaminer et al. 2014 (N=60) |
THC positive UA + cannabis diagnosis/Outpatient |
10 week group CBT |
Yes | No | Abstinence | 1×/week UA for 2 weeks; 2×/week for 8 weeks |
Escalating with reset |
$242 | Vouchers/Gift cards |
Negative: CM=control; poor outcomes in both conditions |
Stanger et al., 2015 (N=153) |
Cannabis use + diagnosis/Outpatient |
Individual Met/CBT 5+7 |
Yes | Yes + incentives for parents |
Abstinence | 2×/week UA for 14 weeks |
Escalating with reset |
$725 | Vouchers/Gift cards + Fishbowl/gift cards |
Positive: CM>control; during treatment differences; not sustained to 12 month follow up |
Henggeler et al., 2012 (N=104) |
Drug court (80% with cannabis diagnosis)/Outpatien t |
Usual drug court services |
No | Yes | Abstinence | 1×/week UA + random tests for ~4 months |
Escalating/ can’t redeem points if not abstinent/no reset |
$150 | Vouchers/gift cards |
Positive: CM>control; during treatment differences to 9 months of continued drug court involvement |
Godley et al., 2014 (N=337) |
Post residential treatment/past year substance use disorder (91% with cannabis diagnosis)/Home visits |
Usual continuing care/Assertive Continuing Care |
No | No1 | Abstinence + prosocial activities |
1×/week UA for 12 weeks + activity verification |
Escalating with reset |
$2982 | Fishbowl/prize cabinet |
Positive: CM>control; effects sustained to 9 month follow up. |
Stewart et al., 2015 (N=136) |
Referral by school staff due to substance use/substance use in prior 3 months (88% cannabis use disorder)/School based |
MI | No | No | Abstinence + self-reported abstinence or reduction (“change plan improvement s”) |
1×/week self report + 50% chance of saliva test for 4 weeks |
Fixed with no reset |
$152 | Fishbowl/gift cards |
Positive: CM>control; during treatment differences; not sustained to 2 month follow up |
Parents participated in one of the comparison conditions (Assertive Continuing Care).
Maximum earnings not presented in manuscript; amount extrapolated from information in manuscript
MET =Motivational Enhancement Therapy; CBT=Cognitive Behavior Therapy; MI=Motivational Interviewing; UA=urinalysis; CM=Contingency Management