Table 1.

Participant characteristics

	ASD	TD
N (m/f)	255 (184/71)	129 (75/54)
Age (months)	36.3 (5.6)	35.2 (6.7)
DQ	63.1 (20.9)	106.4 (12.2)
ADOS‐CSS	7.5 (1.8)	—
Race (% of total)
Caucasian	66.7	74.8
African American/Black	4.5	0.8
Asian or Pacific Islander	9.5	5.7
2+ races reported	13.6	15.4
Unknown/not reported	5.3	3.3
Annual family income (% > $75,000)	56.8	53.5
Parental education (% bachelor's degree or higher)
Maternal	48.4	65.0
Paternal	44.6	49.6

Note: Income (ASD 3% refused, 16% missing; TD 0% refused, TD 7% missing). Parental Education (ASD 12% missing; TD 5% missing).