Table 1.
Sample Characteristics
| ADHD (n=30) | CTRL (n=25) | p-value | |||
|---|---|---|---|---|---|
| Mean(SD) | Range | Mean(SD) | Range | ||
| Age (years) | 11.2 (0.8) | 10.1-12.7 | 11.5 (1.0) | 10.0-12.9 | .20 |
| Sex (% male) | 80% | 76% | .73 | ||
| Estimated IQ | 106.1 (11.9) | 83-123 | 114.4 (12) | 94-135 | .02 |
| Race (% white) | 87% | 92% | .90 | ||
| Parent's Education (median) | College Graduate | College Graduate | .94 | ||
| Income (median) | 50-59K | 10-100K+ | 70-79K | 40-100K+ | .01 |
| DBD Inattention Symptomsa | 8.2 (1.5) | 3-9 | 0.4 (0.2) | 0-1 | <.001 |
| DBD Hyperactivity/Impulsivity Symptomsa | 7.7 (1.5) | 4-9 | 0.1 (0.3) | 0-1 | <.001 |
| DBD ODD Symptomsa | 3.8 (2.2) | 0-7 | 0.0 (0.0) | 0-0 | <.001 |
| DBD CD Symptomsa | 0.9 (1.1) | 0-4 | 0.0 (0.0) | 0-0 | <.001 |
| CDI T-score | 46.5 (6.9) | 40-62 | 44.4 (5.1) | 40-59 | .20 |
| RCMAS T-score | 49.8 (9.2) | 24-64 | 45.0 (10.3) | 24-65 | .07 |
Notes. IQ = Estimated Full Scale IQ based on prorated scores from the vocabulary and block design subtests of the WISC-IV; DBD = Disruptive Behavior Disorder Rating Scale; ODD = Oppositional Defiant Disorder; CD = Conduct Disorder; CDI = Children's Depression Inventory; RCMAS = Revised Children's Manifest Anxiety Scale.
a
Combined parent and teacher ratings on the DBD Rating Scale, mean (SD) and range of total number of items rated as “pretty much” or “very much” by either the parent or the teacher, indicating a symptom was present.