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Table 1 Distribution of age, sex, and IQ for each study group

From: Association study in siblings and case-controls of serotonin- and oxytocin-related genes with high functioning autism

   Mean SD Range Total
Age (in y) ASD 11.24 3.10 5–17 76
  Siblings* 10.53 3.25 6–17 78
  Controls 11.77 3.01 6–17 99
IQ, SON ASD 108.68 16.03 80–140 75
  Siblings 109.75 12.36 82–135 77
  Controls 112.19 12.53 86–140 99
IQ, CFT ASD 105.16 13.88 70–145 68
  Siblings 104.55 10.65 85–142 73
  Controls 106.71 10.96 85–133 97
   Male Female Ratio (M/F) Total
(% total) (% total)
Sex ASD 64 (84.2) 12 (15.8) 5.33 76
  Siblings*+ 33 (42.3) 45 (57.7) 0.733 78
  Controls 77 (77.8) 22 (22.2) 3.50 99
  1. Abbreviations: ASD autism spectrum disorder, SD standard deviation, SON Snijders-Oomen Non-Verbal Intelligence Test 5.5-17, CFT Culture Fair Test, M Male, F Female.
  2. Statistical analysis was conducted using χ2 tests. *p < .05 versus controls; +p < .05 versus ASD.