TABLE 2

Overall Intervention Effect and Adherence-Level Effect at 6-Month Follow-up Evaluations

Mean Number of ScoreAdjusted Rate Ratio (95% CI) or β
Comparison (N = 57)Intervention (N = 56)Intervention vs ComparisonLow-Adherence (N = 26) vs ComparisonHigh-Adherence (N = 30) vs Comparison
Outcome behaviors, adjusted rate ratio (95% CI)a
    No. of fight injuries in past 30 d0.140.080.58 (0.09–3.94)1.24 (0.13–11.92)0.22 (0.01–3.34)
    No. of fights in past 30 d1.610.780.76 (0.29–2.00)0.55 (0.16–1.85)1.00 (0.31–3.25)
    Carried knife in past 30 d1.041.610.70 (0.16–2.96)0.51 (0.08–3.21)0.90 (0.15–5.38)
    Misdemeanor score total0.850.240.29 (0.08–0.98)b0.52 (0.12–2.19)0.09 (0.01–0.63)b
    Friend problem behavior score total6.786.341.51 (0.64–3.58)1.12 (0.37–3.42)1.80 (0.67–4.82)
    Aggression score total21.814.60.63 (0.40–1.00)0.76 (0.43–1.36)0.51 (0.29–0.90)b
Outcome scales
    Attitudes about interpersonal violence18.118.10.22c−0.35c0.75c
    Attitudes toward retaliation19.418.90.43c0.79c0.11c
    Social competence23.423.30.17c0.43c−0.04c
    Conflict avoidance self-efficacy34.236.62.28b,c2.66b,c2.01c
    Child Behavior Checklist aggression subscale, parent report17.115.1−0.98c−0.73c−1.20c
  • Analyses controlled for baseline values, age, and gender.

  • a Negative binomial regression.

  • b P < .05.

  • c Linear regression β.