Table 1.

Descriptive statistics for subsample of co-residing biological mothers and fathers at 6 and 24 months (n = 630)

State (% NC vs. PA)	45.6%
Child sex (% female)	49.5%
Race/ethnicity (% African American)	22.2%
Low-birth weight status (% < 2,500 grams)	6.2%
Mother's mean age (years) at 6 months	28.3 (5.4)
Father's mean age (years) at 6 months	30.8 (6.3)
Mother's mean years of education at 6 months	13.4 (2.1)
Father's mean years of education at 6 months	13.1 (2.3)
Family mean income-to-needs ratio at 6 months	2.5 (1.9)