Table 1. Sample Characteristics: Study 1a,b,c.
| Measure | ADHD (n=25) | TD (n=33) | p-value |
|---|---|---|---|
| Age | 10.8 (1.1) | 10.9 (1.0) | 0.84 |
| Gender (male:female) | 22:3 | 27:6 | 0.52 |
| Race/Ethnicity(n) | |||
| Hispanic | 2 | 2 | 0.77 |
| African American | 2 | 3 | 0.93 |
| Caucasian | 22 | 28 | |
| WISC Full Scale IQ | 108 (12) | 113 (12) | 0.14 |
|
| |||
| ADHD Symptoms | |||
| Inattention DBD-RS | |||
| Parent report | 22 (4) | 2 (2) | <0.001 |
| Teacher report | 18 (7) | 2 (2) | <0.001 |
| Hyperactivity/Impulsivity DBD-RS | |||
| Parent report | 20 (4) | 1 (2) | <0.001 |
| Teacher report | 16 (6) | 1 (2) | <0.001 |
| CBCL Attention Problems t-score | 72 (8) | 51 (2) | <0.001 |
| TRF Attention Problems t-score | 66 (7) | 51 (3) | <0.001 |
|
| |||
| ODD Symptoms | |||
| DBD-RS | |||
| Parent report | 13 (5) | 1 (1) | <0.001 |
| Teacher report | 8 (7) | 1 (1) | <0.001 |
| CBCL ODD Problems t-score | 66 (9) | 51 (2) | <0.001 |
| TRF ODD Problems t-score | 61 (8) | 51 (3) | <0.001 |
|
| |||
| CD Symptoms | |||
| DBD-RS | |||
| Parent report | 4 (3) | .2 (.5) | <0.001 |
| Teacher report | 3 (3) | 1 (3) | <0.001 |
| CBCL CD Problems t-score | 65 (9) | 52 (3) | <0.001 |
| TRF CD Problems t-score | 61 (8) | 51 (3) | <0.001 |
a
All measures are reported as means (SD) unless otherwise indicated.
b
p-values reflect tests for unequal variances when applicable.
c
ADHD=Attention-Deficit/Hyperactivity Disorder; TD=Typically-Developing; WISC=Weschler Intelligence Scale for Children; DBD-RS=Disruptive Behavior Disorders Ratings Scale; CBCL=Child Behavior Checklist; TRF=Teacher Report Form; ODD=Oppositional Defiant Disorder; CD=Conduct Disorder.