Table 5.
Prevalence of the combined subtype
| Combined subtype | Chi square (P value) | |||
|---|---|---|---|---|
| Negative ADHD status | Positive ADHD status | Total | ||
| N = 385 (%) | N = 15 (%) | N = 400 (%) | ||
| Sex | ||||
| Male | 218 (95.2) | 11 (4.8) | 229 (57.3) | 1.64 (0.199) |
| Female | 167 (97.7) | 4 (2.3) | 171 (42.7) | |
| Age | ||||
| 6–7 | 83 (96.5) | 3 (3.5) | 86 (21.5) | 0.03 (0.983) |
| 8–10 | 146 (96.0) | 6 (4.0) | 152 (38.0) | |
| 11–12 | 156 (96.3) | 6 (3.7) | 162 (40.5) | |
| Class | ||||
| Class one | 90 (97.8) | 2 (2.2) | 92 (23.0) | 5.24 (0.387) |
| Class two | 70 (93.3) | 5 (6.7) | 75 (18.8) | |
| Class three | 63 (98.4) | 1 (1.6) | 64 (16.0) | |
| Class four | 58 (95.1) | 3 (4.9) | 61 (15.2) | |
| Class five | 61 (98.4) | 1 (1.6) | 62 (15.5) | |
| Class six | 43 (93.5) | 3 (6.5) | 46 (11.5) | |