Table 1.

Characteristics of children who are included in the present study (with at least one measure of DNA adducts, N=505)

Variable	Mean ± SD or %
Percent with prenatal ETS exposure	33.5
Maternal TONI score	20.3 ± 7.6
Percent >= high school education	62.6
Maternal demoralization score	1.2 ± 0.6
Percent female	51.7
Percent African American	35.1
Gestational age at birth (weeks)	39.4 ± 1.3
HOME inventory	39.6 ± 5.5
Age at MDI assessment (months)	24.1 ± 2.3
Age at HOME assessment (months)	41.5 ± 9.1