Table 1.
Socio-demographic characteristics and crime profile of different groups.
| Total N = 280 |
IED n = 32 |
PC n = 129 |
HC n = 119 |
F/χ2 | P | IED vs. PC | IED vs. HC | PC vs. HC | |
|---|---|---|---|---|---|---|---|---|---|
| Continuous variables | |||||||||
| Age (year) | 16.10 ± 0.61 | 16.06 ± 0.62 | 16.11 ± 0.62 | 16.10 ± 0.62 | 0.072 | 0.931 | − | − | − |
| Education (year) | 8.20 ± 1.64 | 8.72 ± 1.49 | 7.98 ± 1.64 | 8.29 ± 1.64 | 2.966 | 0.053 | − | − | − |
| Father’s education (years) | 9.25 ± 3.45 | 9.88 ± 3.64 | 9.15 ± 3.38 | 9.19 ± 3.45 | 0.607 | 0.546 | − | − | − |
| Mother’s education (years) | 8.34 ± 3.44 | 9.69 ± 4.10 | 8.06 ± 3.15 | 8.29 ± 3.49 | 2.934 | 0.055 | − | − | − |
| Categorical variables | |||||||||
| The only child in family | 192, 68.6% | 20, 62.5% | 97, 75.2% | 75, 63.0% | 4.871 | 0.088 | − | − | − |
| Parental marital status (divorced) | 61, 21.8% | 5, 15.6% | 33, 25.6% | 23, 19.3% | 2.225 | 0.329 | − | − | − |
| Family income (monthly)a | 8.344 | 0.214 | − | − | − | ||||
| <1,000 | 29, 10.4% | 2, 6.3% | 16, 12.4% | 11, 9.2% | |||||
| 1,000–1,999 | 75, 26.8% | 6, 18.8% | 39, 30.2% | 30, 25.2% | |||||
| 2,000–3,499 | 96, 34.3% | 17, 53.1% | 41, 31.8% | 38, 31.9% | |||||
| >3,500 | 80, 28.6% | 7, 21.9% | 33, 25.6% | 40, 33.6% | |||||
| Migrant population (n, %) | 172, 61.5% | 16, 50.0% | 86, 66.7% | 70, 58.8% | 3.599 | 0.165 | − | − | − |
| Types of crime | 90.824 | <0.001 | |||||||
| Homicide | 7, 2.5% | 2, 6.3% | 2, 1.6% | 3, 2.5% | − | − | − | ||
| Rape | 13, 4.6% | 6, 18.8% | 6, 4.7% | 1, 0.8% | <0.05 | <0.05 | >0.05 | ||
| Assault | 31, 11.1% | 11, 34.4% | 15, 11.6% | 5, 4.2% | <0.05 | <0.05 | <0.05 | ||
| Robbery | 50, 17.9% | 2, 6.3% | 32, 24.8% | 16, 13.4% | <0.05 | >0.05 | <0.05 | ||
| Affray | 32, 11.4% | 10, 31.3% | 15, 11.6% | 7, 5.9% | <0.05 | <0.05 | >0.05 | ||
| Theft | 113, 40.4% | 1, 3.1% | 41, 31.8% | 71, 59.7% | <0.05 | <0.05 | <0.05 | ||
| Fraud | 14, 5.0% | 0, 0.0% | 8, 6.2% | 6, 5.0% | − | − | − | ||
| Drug-pusher | 20, 7.1% | 0, 0.0% | 10, 7.8% | 10, 8.4% | − | − | − | ||
| Violence crime (n, %)b | 133, 47.5% | 31, 96.9% | 70, 54.3% | 32, 26.9% | 59.024 | <0.001 | <0.05 | <0.05 | <0.05 |
| Money or property as the aim (n, %) | 147, 52.5% | 1, 3.1% | 59, 45.7% | 87, 73.1% | 53.918 | <0.001 | <0.05 | <0.05 | <0.05 |
| Recidivism (n, %) | 112, 40.0% | 21, 65.6% | 76, 58.9% | 15, 12.6% | 65.197 | <0.001 | >0.05 | <0.05 | <0.05 |
IED, intermittent explosive disorder; PC, psychopathology controls, HC; healthy controls.
a
Chinese RMB (yuan) minimum monthly salary (per person).
b
Violence crime refers to homicide, rape, assault, robbery, and affray. Nonviolence crime refers to theft, fraud, and drug-pusher.