Table 1.

Demographic Characteristics of Participating Families (12 month visit)

Maternal age (years)
M(SD)	33.42 (4.29)
Infant age (months)
Home Visit M (SD)	6.67 (.44)
Lab Visit M (SD)	12.18 (.72)
Maternal ethnicity
Caucasian	73.4%
Asian	11.0%
Black	6.4%
Hispanic	3.7%
Native American	.9%
Multiracial/Other	4.6%
Infant ethnicity
Caucasian	65.5%
Asian	4.5%
Black	4.5%
Hispanic	1.8%
Native American	0%
Multiracial/Other	23.6%
Income-to-needs ratio
M(SD)	5.59 (3.62)
Maternal education (% with at least a 4 year college degree)	87.2%
Paternal education (% with at least a 4 year college degree)	77.4%
Maternal occupational prestige (1-5 scale)	3.89 (1.04)
M(SD)
Paternal occupational prestige (1-5 scale)	3.77 (1.16)
M(SD)