Table 1 Study sample characteristics
From: Emotion dysregulation in ADHD and other neurodevelopmental conditions: a co-twin control study
|  | Total twin sample (N = 389) | DZ twins (n = 165) | MZ twins (n = 224) |
|---|---|---|---|
Sex (females), N (%) | 178 (45.8%) | 70 (42.4%) | 108 (48.2%) |
Years of age, mean/range | 16.75/8–36 | 15.15/8–31 | 17.93/8–33 |
ADHD diagnosis, N (%) | 107 (27.5%) | 63 (38.2%) | 44 (19.6%) |
Autism diagnosis, N (%) | 89 (22.9%) | 42 (25.5%) | 47 (21.0%) |
Other NDC, N (%) | 63 (16.2%) | 36 (21.5%) | 27 (12.1%) |
Affective condition, N (%) | 75 (19.3%) | 35 (21.2%) | 40 (17.9%) |
ID, N (%) | 19 (4.9%) | 6 (3.6%) | 13 (5.8%) |
Typically developed, N (%) | 172 (44.2%) | 58 (35.2%) | 114 (50.9%) |
Qualitatively discordant for ADHD, N (twin pairs) | 54 | 40 | 14 |
Qualitatively discordant for autism, N (twin pairs) | 53 | 32 | 21 |
Qualitatively discordant for other NDCs, N (twin pairs) | 36 | 25 | 11 |
Qualitatively discordant for affective conditions, N (twin pairs) | 47 | 25 | 22 |
Qualitatively discordant for ID, N (twin pairs) | 13 | 6 | 7 |