Table 1.
Study | Age (years) | n | SUD type | CM type | CM duration (weeks) | Primary outcome |
---|---|---|---|---|---|---|
Angelo et al57 | 43.5 (SD 9.31) | 96 | Stimulant-use disorder | RCT, usual CM | 12 | Stimulant-negative urine test, psychiatric severity, and rates of outpatient-treatment utilization |
Barry et al66 | Age reported by ethnicity: African-American 42.5 (SD 6.6) Hispanic 37.2 (SD 6.6) White 41.1 (SD 7.3) |
191 | Stimulant-use disorder | RCT, usual CM | 12 | CM participants had longer continuous cocaine abstinence and submitted more negative urine samples for cocaine; ethnicity not related to treatment outcomes, and there was no significant interaction between treatment and ethnicity |
Bellack et al53 | 42.7 (SD 7.10) | 129 | Drug (cocaine, heroin, cannabis)-dependence disorder | Usual CM | 24 | Urinalysis results from biweekly treatment sessions |
Helmus et al60 | 43.7 (SD 7.1) | 20 | Any SUD | A-B-A, usual CM | 12 | CM participants had higher rates of attendance than UC, but no effect on alcohol use |
Kelly et al55 | 40.2 (SD 10.4) | 160 | Substance abuse and comorbid psychiatric disorders | Usual CM | 6 | CM participants attended more treatment days compared to UC group |
McDonell et al6 | 45.38 (SD 10.20) | 79 | Alcohol-use disorder | RCT using EtG urine tests, usual CM | 12 | CM participants 3.1 times more likely to submit EtG-negative urine tests compared to those in the control group |
McDonell et al52 | CM 43.01 (SD 9.27) UC 42.45 (SD 9.97) |
176 | Stimulant-use disorder | RCT using urine tests, usual CM | 12 | CM participants significantly less likely to complete treatment period than those assigned to control group (42% vs 65%); CM participants 2.4 times more likely to submit stimulant-negative urine test during treatment |
McDonell et al56 | 41.8 (SD 9.2) | 126 | Stimulant-use disorder | RCT using carbon monoxide breath samples, usual CM | 12 | CM participants 79% more likely to submit a smoking-negative breath sample compared to UC group |
Miguel et al67 | CM 35.3 (SD 8.7) UC 35.4 (SD 8.5) |
65 | Stimulant-use disorder | RCT using urine and breath samples, usual CM | 12 | CM participants more likely to remain in treatment and submit negative crack-cocaine, alcohol, and THC samples compared to UC participants |
Oluwoye et al63 | 45.38 (SD 10.2) | 79 | Alcohol-use disorder | RCT using EtG urine tests, usual CM | 12 | Heavy drinkers with major depression more likely than those with schizophrenia-spectrum and bipolar disorders to submit EtG-positive urine samples during treatment |
Peirce et al18 | CM 42.5 (SD 8.9) UC 41.6 (SD 8.3) |
388 | Stimulant-use disorder | RCT using EtG urine tests, usual CM | 12 | Total number of stimulant- and alcohol-negative samples provided and longest duration of abstinence, retention, and counseling attendance |
Ries et al54 | Not reported | 41 | Any SUD | RCT, usual CM | 27 | CM condition used alcohol for few weeks; no significant differences between groups for drug use |
Abbreviations: SUD, substance-use disorder; CM, contingency management; RCT, randomized controlled trial; EtG, ethyl glucuronide; EtG, ethyl glucuronide.