Main samples general table
| Publication | Definition | Sample size | Age in years (SD) | Males (%) | Right handed (%) | Years of education (SD) |
| Ahrendts 201... | Individuals with ADHD | 31 | 31.20 (9.70) | 20 (65%) | 31 (100%) | 12.10 (1.40) |
| Almeida Mont... | Individuals with ADHD | 20 | 28.95 (4.01) | 10 (50%) | 20 (100%) | N/A |
| Amico 2011... | Individuals with ADHD | 20 | 33.60 (10.20) | 15 (75%) | 19 (95%) | N/A |
| Brieber 2007... | Individuals with ADHD | 15 | 13.13 (1.40) | 15 (100%) | 15 (100%) | N/A |
| Carmona 2005... | Individuals with ADHD | 25 | 10.82 (3.00) | 21 (84%) | 22 (88%) | N/A |
| Depue 2010... | Individuals with ADHD | 31 | 20.00 (1.70) | 19 (61%) | 31 (100%) | 14.76 (1.35) |
| Kobel 2010... | Individuals with ADHD | 14 | 10.43 (1.34) | 14 (100%) | 13 (93%) | N/A |
| McAlonan 200... | Individuals with ADHD | 28 | 9.90 (2.00) | 28 (100%) | 28 (100%) | 4.40 (1.90) |
| Overmeyer 20... | Individuals with ADHD | 18 | 10.40 (1.70) | 15 (83%) | 11 (61%) | N/A |
| Rubia 2010... | Individuals with ADHD | 15 | 12.80 (1.50) | 15 (100%) | 15 (100%) | N/A |
| Sasayama 201... | Individuals with ADHD | 18 | 10.57 (3.29) | 13 (72%) | 18 (100%) | N/A |
| Seidman 2010... | Individuals with ADHD | 74 | 37.30 (12.60) | 38 (51%) | 65 (88%) | N/A |
| Wang 2007... | Individuals with ADHD | 12 | 13.40 (0.90) | 12 (100%) | 12 (100%) | N/A |
| Yang 2008... | Individuals with ADHD | 57 | 11.10 | 35 (61%) | N/A | N/A |