Table 2.
Youths' scores on baseline and 7-year follow-up outcome variables, by study arm
| Outcome | Baseline | 7-yr follow-up | ||||
|---|---|---|---|---|---|---|
| CD (n = 188) | CDP (n = 162) | Control (n = 163) | CD (n = 143) | CDP (n = 127) | Control (n = 139) | |
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SE) | Mean (SE) | Mean (SE) | |
| Alcohol refusala | 5.83 (.5) | 5.86 (.5) | 5.80 (.6) | 4.25 (.1) | 4.06 (.1) | 3.77 (.1) |
| Drinking friends, numberb | 1.16 (.6) | 1.10 (.5) | 1.23 (.7) | 2.26 (.1) | 2.43 (.1) | 2.53 (.1) |
| Peer pressurec | 1.08 (.4) | 1.08 (.4) | 1.05 (.3) | 1.47 (.1) | 1.55 (.1) | 1.71 (.1) |
| Intentionsd | 1.29 (1.6) | 1.74 (1.3) | 1.24 (1.1) | 4.69 (.3) | 4.74 (.3) | 5.57 (.3) |
| 30-d usee | ||||||
| Alcohol | .05 (.5) | .07 (.5) | .05 (.3) | 2.77 (.6) | 2.51 (.6) | 4.25 (.6) |
| ≥ 5 drinks in row | .09 (1.1) | .00 (.0) | .03 (.2) | 1.05 (.5) | .76 (.5) | 2.15 (.5) |
| Marijuana | .00 (.0) | .04 (.5) | .04 (.5) | 3.35 (1.0) | 4.68 (1.1) | 3.59 (1.0) |
| Cigarettes | .08 (1.1) | .16 (2.0) | .05 (.5) | 7.40 (4.2) | 7.82 (4.4) | 20.79 (4.2) |
Baseline variance shown as standard deviations; follow-up variance shown as standard errors due to adjusted marginal means.
a
Six-point scale where higher scores are better.
b
Lower scores (i.e., fewer drinking friends) are better.
c
Four-point scale where lower scores are better.
d
Ten-point scale where lower scores are better.
e
Reported occasions or instances of use for each respective substance.