Table 1.
Participant Demographic Characteristics
| ADHD (n=12) | Control (n=12) | Statistical Test (2-tailed) | |
|---|---|---|---|
| Age | 15.8 (1.5) | 15.6 (0.8) | t(22) = 0.34, P=.74 |
| Full Scale IQ | 106.1 (10.8) | 111.6 (11.7) | t(22) = −1.19 P =.25 |
| Reading | 104.6 (7.5) | 111.0 (5.7) | t(22) =− 2.37, P =.03 |
| Spelling | 95.7 (12.9) | 106.0 (10.4) | t(22) = −2.15, P =.04 |
| Arithmetic | 100.6 (13.4) | 106.3 (15.5) | t(22) = −0.96, P =.35 |
| Ethnicity | χ2(2) = 0.39, P =.82 | ||
| Caucasian | n = 10 | n = 9 | |
| Hispanic | n = 1 | n = 1 | |
| Other | n = 1 | n = 2 | |
| DSM-IV ADHD T-score | 82.9 (6.2) | 47.4 (9.7) | t(21) = 10.5, P <.001 |
| Alcohol Use Past Month (number of times) | .83 (2.3) | .83 (1.3) | t(22) = 0.00, P =1.0 |
| Illicit Drug Use Past Month (number of times) | .42 (1.0) | .50 (1.7) | t(22) = −.14, P =.89 |
| Comorbid Diagnoses | Not applicable | ||
| Other Disruptive Behavior Disorder | n = 6 | ||
| Mood Disorder | n = 2 | ||
| Anxiety Disorder | n = 3 | ||
| Medication Use | Not applicable | ||
| Adderall | n = 1 | ||
| Ritalin | n = 3 |
Note: Values are mean (standard deviation). ADHD = attention-deficit/hyperactivity disorder; IQ = intelligence quotient; DSM-IV = Diagnostic and Statistical Manual