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Demographics represented by mean ± standard deviation or N (%).
| Controls (N=107) | ADHD (N=77) | ADHD+ODD (N=37) | Test Statistic | p-value | |
|---|---|---|---|---|---|
| Demographics | |||||
| Age at baseline (years) | 12.1 ± 2.9 | 11.2 ± 3.4 | 11.0 ± 3.1 | F(2,218)=2.48 | 0.09 |
| Ethnicity (Caucasian) | 94 (90) | 72 (95) | 36 (97) | χ2(2)=2.52 | 0.28 |
| Socioeconomic status | 1.7 ± 0.8 | 1.8 ± 0.9 | 1.9 ± 0.9 | χ2(2)=2.37 | 0.31 |
| Intact family | 89 (83) | 54 (70) | 27 (73) | χ2(2)=4.68 | 0.10 |
| Ascertainment source (psychiatric) | 46 (43) | 30 (39) | 21 (57) | χ2(2)=3.28 | 0.19 |
