TABLE I.

Sample Description

Infant characteristics
Gender (female)	54% (107)
Birth weight (kg)	3.26 ± 0.73
Premature (<37 weeks)	10% (20)
Low birth weight (<2.5 kg)	12% (23)
Cesarean section	18% (36)
Formula with iron	94% (185)
Some breast feeding	33% (66)
If breast fed, duration (weeks)	18.5 ± 12.9
Family characteristics
Mother’s age (years)	25.3 ± 5.9
Teen birth (<18 years)	4.5% (9)
Number of children	1.8 ± 1.0
Marital status (married)	15% (29)
Mother’s education (years)	12.8 ± 1.5
Type of insurance (Medicaid)	87% (172)

Values are percent (number) for categorical variables and mean ± SD for continuous variables.