Skip to main content

Advertisement

Table 3 Number of children, n (%), with scores for ADHD and autistic traits above validated cut-offs

From: Effect of co-twin gender on neurodevelopmental symptoms: a twin register study

  ADHD ASD
Cut-off ≥6 ≥12.5 ≥4.5 ≥8.5
Index twin F** M F M F M F M
Female co-twin 137 (7.6) 595 (14.2) 17 (0.9) 125 (3) 40 (2.2) 220 (5.2) 10 (0.6) 58 (1.4)
Male co-twin 247 (5.9) 274 (13) 39 (0.9) 52 (2.5) 81 (1.9) 103 (4.9) 23 (0.5) 25 (1.2)
  1. ADHD and autistic traits measured by the Autism—Tics, AD/HD, and other Comorbidities inventory (A-TAC)
  2. F female index twin, M male index twin
  3. **p = 0.01 for χ 2 analysis between female and male co-twins