Table 1.
Demographic Values Across the Four Groups
| Variable | Controls | ADHD | RD | RD/ADHD |
|---|---|---|---|---|
| Sex (% Boys) | 43.24 | 57.17 | 61.22 | 59.18 |
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| Ethnicity/Race | % | % | % | % |
|
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| Caucasian | 90.54 | 90.11 | 91.84 | 75.51 |
| African/African American | 2.70 | 3.30 | 2.04 | 8.16 |
| Asian/Asian American | 1.35 | 0.00 | 2.04 | 0.00 |
| Hispanic/Spanish/Latino(a) | 1.35 | 2.20 | 2.04 | 6.12 |
| Other | 4.05 | 4.40 | 2.04 | 10.20 |
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| M (SD) | M (SD) | M (SD) | M (SD) | |
|
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| Age (years) | 9.72 (1.39) | 9.60 (1.38) | 9.41 (1.24) | 9.27 (1.37) |
| Maternal Education | 5.65 (1.06) | 5.52 (1.23) | 5.40 (1.21) | 5.46 (1.26) |
| TONI-3 IQa | 105.99 (13.58) | 98.02 (11.60) | 96.69 (9.40) | 95.29 (10.53) |
Note.
a
Groups differed at p < .001. A 5 on Maternal Education = some college.