Table 1.

Demographic Characteristics of the Sample

	HR Infants (n = 50)	LR Infants (n = 34)
Infant Age at Visit (months)	M (SD)	M (SD)
12-month (Time 1)	12.27 (0.45)	12.32 (0.37)
15-month (Time 2)	15.31 (0.35)	15.22 (0.57)
18-month (Time 3)	18.21 (0.45)	18.22 (0.46)
Infant Gender	# (%)	# (%)
Female	21 (42)	18 (53)
Male	29 (58)	16 (47)
Infant Race/Ethnicity	# (%)	# (%)
Caucasian	36 (72)	30 (88)
Multiracial	8 (16)	3 (9)
Other	6 (12)	1 (3)
Maternal Level of Education	# (%)	# (%)
HS diploma only	9 (18)	2 (6)
Associates or Bachelor’s degree	22 (44)	15 (44)
Masters degree or higher	13 (26)	16 (47)
No response	6 (12)	1 (3)