Table 2.
Childhood Characteristics of Probands as a Function of Medication Treatment Status
| Variable | ADHD-U n = 48 Mean (SD) | ADHD-M n = 42 Mean (SD) | t | p |
|---|---|---|---|---|
| Age at initial evaluation | 9.42 (1.23) | 8.80 (1.15) | −2.50 | 0.01 |
| FSIQ (Childhood) | 90.51 (13.66) | 96.45 (14.71) | 1.95 | NSa |
| WRAT-R/WIAT Math Score | 91.14 (12.86) | 95.09 (15.71) | 1.29 | NS |
| WRAT-R/WIAT Reading Score | 91.36 (15.28) | 94.3 (19.67) | 0.781 | NS |
| CBCL Externalizing T-Score | 67.7 (10.87) | 71.19 (10.76) | 1.47 | NS |
| CBCL Internalizing T-Score | 65.43 (11.79) | 65.05 (11.08) | −0.15 | NS |
| CBCL Aggression T-Score | 69.28 (13.2) | 73.51 (13.91) | 1.42 | NS |
| CBCL Delinquency T-Score | 66.6 (9.41) | 68.79 (9.92) | 1.03 | NS |
| CBCL Attention T-Score | 70.6 (9.98) | 73.93 (9.6) | 1.55 | NS |
| IOWA Aggression | 8.1 (4.62) | 7.89 (4.73) | −0.21 | NS |
| IOWA Inattention/Overactivity | 10.20 (3.47) | 12.25 (2.62) | 3.07 | 0.003 |
a
p > .05.
ADHD-U = attention-deficit/hyperactivity disorder-unmedicated; ADHD-M = attention-deficit/hyperactivity disorder-medicated; FSIQ = Full Scale IQ; WRAT-R = Wide Range Achievement Test-Revised; WIAT = Wechsler Individual Achievement Test; CBCL = Child Behavior Checklist; IOWA = Inattention-Overactivity with Aggression; NS = not significant.