Table 1.

Mean age and IQ (including standard deviation and range) of the 47,XXY, ASD and control groups

Group	Age			IQ
	Mean	SD	Range	Mean	SD	Range
47,XXY	14.53	3.03	11.1–18.9	77	10.69	57–88
ASD	11.84	2.13	9.0–18.2	97	18.15	68–123
Controls	11.95	2.91	9.2–18.5	103	15.45	74–132