Table 5.
Performance on the Trail Making Test by ADHD Subtype
| Inattentive
(n = 19) |
Combined/Hyperactive-Impulsive
(n = 35) |
p | da | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| VS | 8.8 | 2.2 | 10.4 | 2.6 | .029 | 0.71 |
| NS* | 9.1 | 3.3 | 11.3 | 2.3 | .007 | 0.87 |
| LS* | 8.1 | 4.4 | 11.0 | 3.0 | .007 | 0.87 |
| LN | 9.3 | 2.7 | 10.3 | 3.2 | .263 | 0.39 |
| MS | 9.3 | 3.6 | 10.0 | 2.9 | .440 | 0.26 |
| COMB* | 9.0 | 4.2 | 11.8 | 2.7 | .005 | 0.91 |
| CON1 | 10.6 | 2.6 | 10.0 | 2.7 | .456 | 0.19 |
| CON2 | 10.2 | 3.3 | 9.1 | 3.0 | .216 | 0.34 |
| CON3 | 11.2 | 3.7 | 9.3 | 3.0 | .053 | 0.56 |
| CON4 | 10.4 | 3.7 | 8.6 | 3.0 | .058 | 0.56 |
| CON5 | 10.0 | 2.9 | 10.3 | 3.4 | .770 | 0.12 |
Note.
a
Effect size (Cohen’s d) for group comparison (ADHD-I vs. ADHD-C/HI). VS = Visual Scanning SS; NS = Number Sequencing SS; LS = Letter Sequencing SS; LN = Letter-Number Sequencing SS; MS = Motor Speed SS; COMB = Number + Letter Sequencing SS; CON1 = Switching vs. Visual Scanning SS; CON2 = Switching vs. Number Sequencing SS; CON3 = Switching vs. Letter Sequencing SS; CON4 = Switching vs. COMB; CON5 = Switching vs. Motor Speed SS;
*
ADHD-C/HI > ADHD-I p < .01.