Table 1. Characteristics of the chronic physical aggression (CPA) group and control group.
| Variables | Control | CPA | Group | ||
| Mean ± SD or % (n) | |||||
| Age at blood drawn | 25.4±2.71 | (12) | 25.8±2.87 | (8) | t(18) = −0.26, P = 0.80 |
Familial adversity score
|
0.34±0.29 | (12) | 0.51±0.41 | (7) | t(17) = −1.06, P = 0.31 |
| Psychiatric record (21 years old) | 60% | (6/10) | 43% | (3/7) | F exact, 2 tailled: 0.64 |
| Criminal record (21 years old) | 17% | (2/12) | 75% | (6/8) | F exact, 2 tailled: 0.019 |
| Self-reported violence (21 years) | 10% | (1/10) | 57% | (4/7) | F exact, 2 tailled: 0.10 |
| Attention deficit score (6 to 15 years) | 3.23±2.18 | (12) | 4.00±1.89 | (8) | t(18) = −0.81, P = 0.43 |
| Hyperactivity trajectories (6 to 15 years) | 17% | (3/12) | 50% | (4/8) | F exact, 2 tailled: 0.14 |
| Opposition trajectories (6 to 15 years) | 0% | (0/12) | 75% | (6/8) | F exact, 2 tailled: 0.001 |
| Anxiety trajectories (6 to 15 years) | 8% | (1/12) | 13% | (1/8) | F exact, 2 tailled: 0.65 |
include mother and father occupational score, familial status (monoparental vs biparental), mother and father at birth of first child and the years of schooling of the mother and father.