Table 2.
Demographic and baseline outcomes by allocated group.
| Control (n=304) | PFBA (n=285) | eBI (n=294) | |
|---|---|---|---|
| Mean age in years (SD) | 15.2 (1.1) | 15.1 (1.0) | 15.2 (1.0) |
| Mean age of first drink (SD) | 13.8 (1.7) | 13.6 (1.9) | 13.9 (1.8) |
| Male n (%) | 144 (47.4) | 145 (50.9) | 143 (48.6) |
| White n (%) | 187 (61.5) | 182 (64.0) | 180 (61.2) |
| Black n (%) | 53 (17.4) | 54 (18.9) | 51 (17.3) |
| Asian n (%) | 26 (8.6) | 20 (7.0) | 19 (6.5) |
| Other n (%) | 38 (12.5) | 29 (10.1) | 44 (15.0) |
| Smoker n (%) | 31 (10.3) | 20 (7.1) | 26 (8.7) |
| Alcohol use | |||
| Abstinent n (%) | 82 (27.0) | 73 (25.6) | 81 (27.6) |
| Mean weekly alcohol consumed (SD)a | 0.14 (0.28) | 0.14 (0.28) | 0.15 (0.29) |
| Mean AUDIT-C Score (SD) | 0.38 (0.66) | 0.40 (0.71) | 0.43 (0.72) |
| Monthly heavy episodic alcohol use n (%)b | 8 (2.6) | 21 (7.4) | 19 (6.4) |
| Ever intoxicated n (%)c | 105 (24.7) | 101 (35.4) | 102 (34.7) |
| Intoxicated in past 12 months n (%)c | 76 (25.0) | 76 (26.6) | 76 (26.0) |
| Intoxicated in past 30 days n (%)c | 18 (6.0) | 21 (7.5) | 24 (8.0) |
| Alcohol-related problems | |||
| Fighting n (%) | 33 (10.9) | 26 (9.2) | 16 (5.4) |
| Accident or injury n (%) | 51 (16.7) | 40 (14.1) | 32 (10.9) |
| Parent problems n (%) | 33 (10.9) | 20 (7.0) | 18 (6.1) |
| Peer problems n (%) | 31 (10.3) | 32 (11.3) | 20 (6.8) |
| School problems n (%) | 27 (9.0) | 26 (9.2) | 20 (6.8) |
| Victim of theft n (%) | 18 (5.8) | 6 (2.1) | 12 (4.1) |
| Police problems n (%) | 12 (3.8) | 14 (4.9) | 16 (5.4) |
| Hospitalised n (%) | 33 (10.8) | 23 (7.9) | 20 (6.8) |
| Unprotected sex n (%) | 14 (4.5) | 8 (2.8) | 18 (6.1) |
| Regretted sex n (%) | 8 (2.5) | 6 (2.1) | 10 (3.4) |
| Strengths and Difficulties | |||
| (Higher scores indicate more difficulties) | |||
| Mean overall score (SD) | 10.9 (5.7) | 10.7 (5.5) | 11.0 (5.7) |
| Mean emotional score (SD) | 3.0 (2.2) | 3.1 (2.3) | 3.2 (2.4) |
| Mean conduct score (SD) | 2.0 (1.7) | 1.9 (1.6) | 2.0 (1.6) |
| Mean hyperactivity score (SD) | 3.7 (2.3) | 3.8 (2.3) | 3.7 (2.2) |
| Mean Peer problem score (SD) | 2.1 (1.6) | 1.9 (1.6) | 2.1 (1.6) |
| Mean prosocial score (SD) | 7.8 (1.8) | 7.9 (1.8) | 7.8 (1.7) |
a
Measured as standard drinks where 1 standard drink = 8g ethanol.
b
Measured as 6 or more standard drinks in a single drinking episode.
c
Intoxication is self-defined as loss of control while drinking.