Table 5.

Differences in ASD symptoms across recruitment strategies (M, SD)

ASD symptoms	Prospective follow-up	Information seeking parents	Clinically referred cases	P value
2–4 Year old children	n = 17	n = 9	n = 2
M-CHAT: total score	2.59 (2.48)	2.11 (1.27)	1.50 (0.71)	.786
4–8 Year old children	n = 27	n = 13	n = 15
ADI-R: total score	20.67 (14.67)	24.77 (13.80)	24.73 (14.28)	.523

ASD autism spectrum disorder, SCT sex chromosome trisomy