Table 2.
Comparison of Intervention and Control Groups on Primary and Secondary Outcomes at Baseline, 6-Week Follow-Up, and 12-Week Follow-Up
| Intervention group
|
Control group
|
|||||
|---|---|---|---|---|---|---|
| Variable | Baseline Mean (SD) (n = 57) |
6-week Mean (SD) (n = 42) |
12- week Mean (SD) (n = 50) |
Baseline Mean (SD) (n = 54) |
6-week Mean (SD) (n = 44) |
12- week Mean (SD) (n = 47) |
| Primary Outcomes | ||||||
| Family communication (child report) | 3.46 (0.96) |
3.73 (0.84) |
3.59 (0.87) |
3.43 (0.90) |
3.43 (0.87) |
3.47 (0.77) |
| Family communication (parent report) | 3.87 (0.70) |
3.99 (0.64) |
3.95 (0.72) |
3.70 (0.79) |
3.73 (0.81) |
3.94 (0.77) |
| Family conflict (child report) | 2.10 (0.89) |
1.89 (0.74) |
1.92 (0.77) |
2.27 (0.96) |
2.05 (0.69) |
1.96 (0.80) |
| Family conflict (parent report) | 2.04 (0.72) |
1.76 (0.68) |
1.72 (0.65) |
2.20 (0.79) |
1.95 (0.71) |
2.01 (0.70) |
| Family cohesion (child report) | 3.63 (1.07) |
3.85 (0.89) |
3.71 (0.96) |
3.55 (1.17) |
3.63 (1.06) |
3.59 (1.08) |
| Family cohesion (parent report) | 3.64 (0.87) |
3.88 (0.66) |
3.85 (0.85) |
3.74 (0.72) |
3.61 (0.96) |
3.89 (0.68) |
| Secondary Outcomes (past month) | ||||||
| Grades of C or worse (combined) | 0.77 (0.43) |
0.66 (0.48) |
0.67 (0.47) |
0.70 (0.46) |
0.55 (0.50) |
0.70 (0.47) |
| Marijuana use (child report) | 2.60 (2.11) |
2.05 (1.79) |
2.52 (2.10) |
1.87 (1.61) |
1.89 (1.82) |
1.94 (1.90) |
| Alcohol use (child report) | 1.51 (1.03) |
1.29 (0.81) |
1.54 (1.13) |
1.42 (1.01) |
1.30 (0.82) |
1.35 (1.04) |
| Substance use intentions (child report) | 0.96 (0.90) |
0.79 (0.84) |
1.02 (0.92) |
0.62 (0.79) |
0.77 (0.89) |
0.74 (0.85) |
| Delinquency (child report) | 0.33 (0.23) |
0.22 (0.23) |
0.22 (0.20) |
0.29 (0.22) |
0.22 (0.22) |
0.24 (0.22) |
| Delinquency (parent report)a | 0.42 (0.28) |
0.27 (0.28) |
0.25 (0.26) |
0.39 (0.28) |
0.35 (0.26) |
0.34 (0.26) |
Notes.
a
This is the only outcome with a significant (p < .05) Time × Treatment interaction effect