Table 1.
Demographics and descriptive information for the sample
| Total (N=2922) | Sample A (n=1429) | Sample B (n=1493) | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| T1 | N (%) | N (%) | N (%) | x2 | df | p |
| Sex | ||||||
| Girls | 1406 (48.1%) | 706 (49.4%) | 700 (46.9%) | 1.86 | 1 | 0.17 |
| Boys | 1516 (51.9%) | 723 (50.6%) | 793 (53.1%) | |||
| Intervention Condition | ||||||
| Parent | 680 (23.3%) | 331 (23.2%) | 349 (23.4%) | 3.82 | 3 | 0.28 |
| Student | 790 (27.0%) | 406 (28.4%) | 384 (25.7%) | |||
| Parent + Student | 650 (22.3%) | 319 (22.3%) | 331 (22.2%) | |||
| Control | 802 (27.4%) | 373 (26.1%) | 429 (28.7%) | |||
|
| ||||||
| T1 | M(SD) | M(SD) | M(SD) | t | df | p |
|
| ||||||
| Age | 14.33 (0.49) | 14.57 (0.49) | 14.56 (0.49) | −0.74 | 2920 | 0.46 |
| PRQ | ||||||
| Original | 40.65 (9.02) | 40.47 (9.11) | 40.83 (8.93) | 1.09 | 2916 | 0.28 |
| Normative | 10.71 (3.18) | 10.63 (3.18) | 10.78 (3.18) | 1.29 | 2916 | 0.20 |
| Non-Normative | 17.40 (3.65) | 17.33 (3.71) | 17.47 (3.56) | 1.07 | 2916 | 0.28 |
| Alcohol Use | ||||||
| Month | 1.54 (2.93) | 1.54 (2.89) | 1.54 (2.96) | 0.35 | 2920 | 0.97 |
| Year | 3.43 (4.27) | 3.40 (4.22) | 3.46 (4.32) | 0.41 | 2920 | 0.68 |