TABLE 2.
Means and standard deviations for substance use outcome variables
| Outcome measure | Intake
|
3 months
|
6 months
|
12 months
|
Effect sizea |
|---|---|---|---|---|---|
| M (SD) | M (SD) | M (SD) | M (SD) | ||
| Substance problem scale | .98 | ||||
| A-CRA/ACC | 4.51 (4.51) | .56 (1.52) | .90 (2.10) | 1.16 (2.34) | |
| SAU | 3.48 (3.56) | .97 (2.28) | 1.64 (3.19) | 1.53 (3.42) | |
| No substance problems | |||||
| A-CRA/ACC (n [%]) | 14 (22) | 50 (81) | 44 (73) | 38 (66) | |
| SAU (n [%]) | 17 (27) | 42 (70) | 36 (62) | 40 (73) | |
| Substance frequency scale | .39 | ||||
| A-CRA/ACC | .23 (.18) | .04 (.09) | .04 (.09) | .06 (.09) | |
| SAU | .18 (.16) | .04 (.09) | .05 (.09) | .07 (.15) | |
| No substance use | |||||
| A-CRA/ACC (n [%]) | 2 (3) | 40 (65) | 32 (53) | 24 (41) | |
| SAU (n [%]) | 4 (6) | 33 (55) | 30 (52) | 24 (44) | |
ACC, assertive community care; A-CRA, adolescent community reinforcement approach; M, mean; n, number of participants; SAU, services as usual; SD, standard deviation.
a
Effect size shown is Cohen’s d for treatment comparison for the continuous part of the two-part model.