Table 3.

ADOS severity score at 24 months by age and risk.

Risk	Age	ADOS severity score		df	t	p
		Mean	SD
High risk	6 months	1.6	0.9	62	−0.51	0.58
	12 months	1.7	1.7
Low risk	6 months	1.3	0.7	62	−0.32	0.58
	12 months	1.4	0.9

Age	Risk	ADOS severity score		df	t	p
		Mean	SD
6 months	High risk	1.6	0.9	62	1.36	0.030
	Low risk	1.3	0.7
12 months	High risk	1.7	1.0	62	1.45	0.075
	Low risk	1.4	0.9