Comparison samples general table
| Publication | Definition | Sample size | Age in years (SD) | Males (%) | Right handed (%) | Years of education (SD) |
| Abell 1999... | Healthy individuals | 15 | 25.33 (3.10) | 12 (80%) | N/A | N/A |
| Boddaert 200... | Healthy individuals | 12 | 10.80 (2.70) | 7 (58%) | N/A | N/A |
| Bonilha 2008... | Healthy individuals | 16 | 13.20 (5.00) | 16 (100%) | N/A | N/A |
| Brieber 2007... | Healthy individuals | 15 | 13.30 (1.80) | 15 (100%) | 15 (100%) | N/A |
| Craig 2007... | Healthy individuals | 19 | 35.00 (14.00) | 0 (0%) | 19 (100%) | N/A |
| Ecker 2010... | Healthy individuals | 22 | 28.00 (7.00) | 22 (100%) | 22 (100%) | N/A |
| Freitag 2008... | Healthy individuals | 15 | 18.60 (1.20) | 13 (87%) | 14 (93%) | N/A |
| Hardan 2003... | Healthy individuals | 12 | 16.50 (8.20) | N/A | N/A | N/A |
| Hyde 2009... | Healthy individuals | 15 | 19.20 (5.00) | 15 (100%) | 15 (100%) | N/A |
| Ke 2008... | Healthy individuals | 15 | 9.73 (1.67) | 12 (80%) | N/A | N/A |
| Kosaka 2010... | Healthy individuals | 40 | 22.50 (4.30) | 40 (100%) | 38 (95%) | N/A |
| Kwon 2004... | Healthy individuals | 13 | 13.60 (3.10) | 13 (100%) | N/A | N/A |
| Langen 2009... | Healthy individuals | 89 | 12.36 (4.79) | 82 (92%) | 76 (85%) | N/A |
| McAlonan 200... | Healthy individuals | 24 | 33.00 (7.00) | 22 (92%) | 23 (96%) | N/A |
| McAlonan 200... | Healthy individuals | 55 | 10.70 (2.74) | 47 (85%) | 55 (100%) | N/A |
| Rojas 2006... | Healthy individuals | 23 | 21.41 (10.91) | 23 (100%) | 22 (96%) | N/A |
| Schmitz 2006... | Healthy individuals | 12 | 39.00 (6.00) | 12 (100%) | 12 (100%) | N/A |
| Toal 2009... | Healthy individuals | 33 | 32.00 (9.00) | 30 (91%) | N/A | N/A |
| Waiter 2004... | Healthy individuals | 16 | 15.50 (1.60) | 16 (100%) | 16 (100%) | N/A |
| Wilson 2009... | Healthy individuals | 10 | 29.40 (7.91) | 7 (70%) | N/A | N/A |