TABLE 1.

Characteristics of Participants in the Healthy Start Study (n = 979)

	Mean ± SD or Proportion
Maternal Characteristics
Maternal age, y, mean ± SD	28 ± 6
Gestational wt gain, kg, mean ± SD	14 ± 6
Prepregnancy BMI, mean ± SD	26 ± 6
Gestational age at birth, wk, mean ± SD	39 ± 1
Maternal race and/or ethnicity, %
Non-Hispanic white	54
Non-Hispanic Black	16
Hispanic	24
Other	6
Household income, %
<$40 000	28
$40 001–$70 000	18
>$70 000	34
Do not know	20
Mother’s highest level of education, %
<12 y	13
High school degree	18
College classes or college degree	68
Maternal smoking during pregnancy, %
Yes	8
No	92
Child characteristics, mean ± SD
Birth wt, g	3230 ± 482
Fat mass (n = 946), g	293 ± 150
Fat-free mass (n = 946), g	2829 ± 348
Adiposity (n = 946), % fat mass	9.1 ± 4.0
Birth wt category, %
Low birth wt (<2500 g)	6
Normal birth wt (2500–4000 g)	89
Macrosomia (>4000 g)	5