Table 4.

Differences in ASD symptoms across karyotypes (M, SD)

ASD symptoms	XXX	XXY	XYY	P value
2–4 Year old children	n = 4	n = 20	n = 4
M-CHAT: Total score	2.50 (1.73)	2.55 (2.28)	1.25 (0.50)	.571
4–8 Year old children	n = 20	n = 21	n = 14
ADI-R: Total score	22.85 (13.41)	19.90 (12.78)	26.86 (17.26)	.419

ASD autism spectrum disorder