Non-Twin case controls | Discordant twins | |
---|---|---|
N | n = 48: 23 ADHD, 21 controls | n = 32a (16 pairs) |
Age in years (mean, SD) | 10.63 (2.0) | 12.29 (4.0) |
Age (range) | 7.47–14.8 | 8.08–17.86 |
% male | 100% | 75% |
ADHD-RS T score “ADHD” (mean, SD) | 65.6 (9) | 62 (9) |
ADHD RS T score “non-ADHD” (mean, SD) | 43 (5.8) | 47 (6.8) |
% ever any mood disorder | 12.5% | 27%b |
% ever any anxiety disorder | 18.75% | 30% |
% current mood | 2.2% | 7% |
% current anxiety | 13% | 27% |
Comorbid dx at year of blood draw | 2.2% mood; 13% anxiety | 7% mood; 27% anxietyb |