Table 1.
Sample characteristics
| Variable | N | % | SCQ mean (SD) | |
|---|---|---|---|---|
| Gender | Male | 598 | 84.1 | 13.1 (6.7) |
| Female | 113 | 15.9 | 12.7 (6.3) | |
| Family income | Low income | 285 | 63.3 | 13.7 (7.2) |
| Medium–high income | 165 | 36.7 | 11.8 (6.6) | |
| Parental education | No GCSEs | 128 | 27.1 | 13.0 (6.9) |
| GCSEs or higher | 345 | 72.9 | 13.1 (7.0) | |
| Socioeconomic status | Low family SES | 332 | 51.5 | 13.7 (6.7) |
| Medium–high SES | 313 | 48.5 | 12.1 (6.6) | |
| ADHD diagnosis subtype | DSM-IV combined subtype | 519 | 73.0 | 13.7 (6.7) |
| DSM-IV predominantly inattentive subtype | 43 | 6.0 | 9.9 (6.2) | |
| DSM-IV predominantly hyperactive-impulsive subtype | 73 | 10.3 | 11.4 (6.9) | |
| DSM-III-R-only | 76 | 10.7 | 11.8 (5.6) | |
| ODD or CD diagnosis | DSM-IV ODD diagnosis | 305 | 44.3 | 13.9 (6.7) |
| DSM-IV CD diagnosis | 131 | 19.0 | 15.1 (6.7) | |
| No CD or ODD diagnosis | 252 | 36.6 | 11.0 (6.1) | |
| Anxiety or depression diagnosis | Any DSM-IV anxiety diagnosisa | 49 | 7.2 | 15.7 (7.7) |
| Any DSM-IV depression diagnosisa | 6 | 0.9 | 11.7 (6.0) | |
| No anxiety or depression diagnosis | 630 | 92.2 | 12.8 (6.5) | |
| Total sample | 711 | 100 | 13.0 (6.6) |
aTwo children met criteria for a diagnosis of both anxiety and depression