Baseline sample characteristics
| Variable | Comparison group (N=49) | Intervention group (N=61) |
| Age | 16.0 (1.6) | 16.0 (1.4) |
| Gender | ||
| Male | 17 (34.7%) | 13 (21.3%) |
| Female | 28 (57.1%) | 42 (68.9%) |
| Other | 4 (8.2%) | 6 (9.8%) |
| Race | ||
| African-American | 22 (44.9%) | 36 (59.0%) |
| White/Caucasian | 19 (38.8%) | 13 (21.3%) |
| Other | 8 (16.3%) | 12 (19.7%) |
| Public assistance | 28 (57.1%) | 37 (60.7%) |
| Self-efficacy for non-violence | 2.43 (0.92) | 2.49 (0.84) |
| Intention to avoid fighting (yes/no) | 32 (52.5%) | 28 (57.1%) |
| Non-partner severe aggression | 42 (68.9%) | 28 (57.1%) |
| Non-partner victimisation* | 32 (52.5%) | 18 (36.7%) |
| Partner/dating aggression | 8 (13.1%) | 5 (10.2%) |
| Partner/dating victimisation | 8 (13.1%) | 7 (14.3%) |
| Violence consequences | 1.75 (2.03) | 1.61 (2.01) |
| Depression | 12 (19.7%) | 9 (18.4%) |
| Anxiety | 16 (26.2%) | 12 (24.5%) |
| Substance Use Index | 1.64 (2.50) | 2.08 (2.69) |
| Substance use consequences | 16 (26.2%) | 15 (30.6%) |
*P<0.05.