| 6-8 years (N = 60) | 9-12 years (N = 70) | P value1 | |
---|---|---|---|---|
Item | Mean ± SD | Mean ± SD |  |  |
ADHDRS_total | 32.2 ± 8.0 | 27.9 ± 7.7 | 0.006 | ** |
ADHDRS_inattention | 17.8 ± 5.1 | 15.7 ± 3.3 | 0.007 | ** |
ADHDRS_hyperactivity | 14.4 ± 5.1 | 12.6 ± 4.7 | 0.017 | * |
CGI –S | 4.8 ± 0.8 | 4.4 ± 0.9 | 0.007 | ** |
WISC-III | Â | Â | Â | Â |
Information | 9.4 ± 2.4 | 9.3 ± 3.2 | 0.736 |  |
Similarities | 8.8 ± 3.4 | 10.7 ± 3.1 | 0.002 | ** |
Arithmetic | 10.0 ± 3.2 | 10.3 ± 3.1 | 0.620 |  |
Vocabulary | 9.4 ± 3.5 | 9.9 ± 2.5 | 0.433 |  |
Comprehension | 9.8 ± 3.1 | 9.7 ± 2.5 | 0.830 |  |
Picture completion | 9.2 ± 2.9 | 9.9 ± 3.2 | 0.211 |  |
Coding | 9.2 ± 4.2 | 8.9 ± 3.2 | 0.715 |  |
Picture arrangement | 9.6 ± 2.8 | 9.8 ± 3.1 | 0.673 |  |
Block design | 10.5 ± 3.1 | 10.8 ± 3.5 | 0.625 |  |
Object assembly | 9.0 ± 2.7 | 9.5 ± 3.2 | 0.414 |  |
Digit span | 9.3 ± 2.6 | 9.8 ± 3.2 | 0.481 |  |
Symbol search | 11.0 ± 2.7 | 11.0 ± 2.4 | 0.989 |  |
FIQ | 96.4 ± 13.7 | 99.0 ± 14.6 | 0.298 |  |
VIQ | 97.1 ± 14.8 | 99.5 ± 13.4 | 0.369 |  |
PIQ | 97.8 ± 13.8 | 98.9 ± 16.5 | 0.720 |  |
VCI | 97.3 ± 13.8 | 100.7 ± 13.2 | 0.181 |  |
POI | 97.2 ± 12.6 | 100.2 ± 15.1 | 0.273 |  |
FDI | 98.5 ± 13.0 | 100.8 ± 15.8 | 0.504 |  |
PSI | 100.6 ± 16.7 | 99.9 ± 12.7 | 0.827 |  |