Table 1.

Demographic characteristics of the sample

	Time 1	Time 2
Age at ADI-R interview in months (M, SD)	35.2 (5.5)	71.7 (13.2)
Verbal DQ/IQ (M, SD)	60.2 (26.1)	78.8 (31.4)
Nonverbal DQ/IQ (M, SD)	75.0 (20.2)	86.4 (26.1)
Overall DQ/IQ (M, SD)	67.6 (21.8)	83.0 (29.7)
ADOS Total (SA + RRB) (M, SD)	18.0 (5.0)	15.2 (7.0)
Father SRS raw score (M, SD)	36.3 (26.9)	–
Mother SRS raw score (M, SD)	28.2 (17.7)	–
Family income (% $50,000 or higher)	69.0%	–
Family affectedness (% multiplex)	9.6%	–
Maternal education (% 4-yr college degree or higher)	45.2%	–

Note: n=73 for all measures except family income (n=42) and maternal education (n=62)