Table 1.
Comparison of demographic and psychometric characteristics of the EO-CD, AO-CD, and HC groups.
| Group (mean ± SD) | ||||||
|---|---|---|---|---|---|---|
| Variable | a. EO-CD | b. AO-CD | c. HC | F value | P value | Post hoc results |
| (N = 36) | (N = 32) | (N = 30) | ||||
| Age, years | 14.33 ± 1.29 | 14.78 ± 0.91 | 14.77 ± 1.17 | 1.71 | 0.19 | |
| C-WISC | 104.20 ± 6.30 | 103.55 ± 8.58 | 106.95 ± 6.46 | 1.96 | 0.15 | |
| FD | 0.20 ± 0.08 | 0.18 ± 0.06 | 0.18 ± 0.06 | 0.86 | 0.43 | |
| BIS scores | ||||||
| Total | 76.31 ± 9.15 | 71.78 ± 8.10 | 67.40 ± 7.37 | 9.46 | <0.001** | c < b < a |
| Impulsivity subscales | ||||||
| Attention | 19.21 ± 3.04 | 17.91 ± 2.83 | 18.40 ± 3.30 | 1.57 | 0.21 | |
| Motor | 25.52 ± 4.24 | 24.44 ± 3.83 | 21.73 ± 3.71 | 7.79 | 0.001** | c < (a, b) |
| Unplanned | 31.58 ± 4.21 | 29.44 ± 4.12 | 27.33 ± 3.78 | 9.02 | <0.001** | c < b < a |
| APSD-CU | 6.39 ± 2.19 | 5.28 ± 1.76 | 4.03 ± 1.63 | 12.66 | <0.001** | c < b < a |
EO-CD, early-onset conduct disorder; AO-CD, adolescent-onset conduct disorder; HC, healthy control; SD, standard deviation; C-WISC, Chinese Wechsler Intelligence Scale for Children; FD, frame-wise displacement; BIS, Barratt Impulsive Scale; APSD-CU, Antisocial Process Screening Device-Callous Unemotional. **p < 0.001.