Table 1.
Sample characteristics by group
| CBCL Percentile | LOW | MOD | BORD | CLIN |
|---|---|---|---|---|
| <80th | ≥80th to ≤93rd | ≥93rd to ≤97th | ≥97th | |
| (n = 189) | (n = 56) | (n = 25) | (n = 47) | |
| Measure | M (SD) | M (SD) | M (SD) | M (SD) |
| Child | ||||
| Gender (% boys) | 61.4 | 57.1 | 72.0 | 78.7 |
| Age (months) * | 51.8 (2.27) | 51.2 (2.45) | 51.5 (3.24) | 50.1 (3.26) |
| IQ | 109.3 (11.90) | 108.6 (9.77) | 108.9 (10.74) | 105.1 (11.11) |
| Aggressive behavior | 6.8 (4.52) | 18.0 (1.52) | 22.0 (0.89) | 27.8 (3.66) |
| Parent | ||||
| N | ||||
| Mother | 188 | 56 | 25 | 46 |
| Father | 176 | 48 | 23 | 44 |
| Age (years) | ||||
| Mother | 35.6 (4.18) | 35.0 (6.25) | 35.3 (3.59) | 34.1 (4.48) |
| Father | 38.0 (4.75) | 37.1 (4.60) | 37.6 (4.20) | 37.4 (6.01) |
| Education (%) | ||||
| Primary | 1.1 | – | – | 2.1 |
| Secondary | 3.2 | 3.7 | 8.0 | 4.3 |
| Intermediate vocational | 28.9 | 42.6 | 20.0 | 29.8 |
| Higher vocational | 34.8 | 31.5 | 28.0 | 38.3 |
| University | 32.1 | 22.2 | 44.0 | 25.5 |
Aggressive Behavior was measured by the CBCL 1½–5; LOW = low levels of aggression; MOD = moderate levels of aggression; BORD = borderline levels of aggression; CLIN = clinical levels of aggression; perc. = percentile of the CBCL Aggressive Behavior Score; *p < .01