Table 1.
Characteristics of 2,084 Mothers and Children for a Study of Prepregnancy BMI, Pregnancy Weight Gain and Child Neurodevelopment, Child Health and Development Studies Participants in the 9–11 year follow-up study.
| Maternal | |
|---|---|
| Prepregnancy BMI, kg/m2 [Mean±SD] | 22.0±3.4 |
| Prepregnancy BMI category,% | |
| Underweight (<18.5 kg/m2) | 8.7 |
| Normal weight (18.5–24.9 kg/m2) | 77.2 |
| Overweight (25–29.9 kg/m2) | 11.2 |
| Obese (≥30 kg/m2) | 2.8 |
| Pregnancy weight gain1, kg [Mean±SD] | 12.0±4.3 |
| Gestational age at delivery, weeks [Mean±SD] | 39.4±1.9 |
| Maternal Race, % | |
| White | 71.6 |
| Black | 21.4 |
| Hispanic | 2.7 |
| Asian | 4.4 |
| Multiparous, % yes | 77.8 |
| Maternal age, y [Mean±SD] | 28.4±5.9 |
| Maternal education, % | |
| Less than high school | 12.7 |
| High school and/or Trade School | 43.2 |
| Some college/College degree | 44.1 |
| Maternal Raw Peabody2, score | 125.5±18.4 |
| Married (yes/no), % | 98.6 |
| Income, relative to 1960 census median, % | |
| Below median | 34.5 |
| At median | 16.3 |
| Above median | 49.2 |
| Child | |
| Male sex, % | 51.7 |
| Preterm delivery3, % | 6.3 |
| Birthweight, grams [Mean±SD] | 3352±508 |
| Age at 9-year exam, years [Mean±SD] | 9.8±0.82 |
| Weight at age 9, kg [Mean±SD] | 33.5±7.2 |
| Height at age 9, cm [[Mean±SD] | 137.6±7.6 |
| Standardized Peabody score4 [Mean±SD] | 50.6±10.0 |
| Standardized Raven score4 [Mean±SD] | 50.4±10.0 |
Abbreviations: BMI, Body mass index; SD, standard deviation.
1
Pregnancy weight gain was coded as a continuous variable defined as the last measured weight prior to delivery minus the self-reported prepregnancy weight.
2
Maternal Peabody was administered in a subset of women in the CHDS, and in our analytic sample 1652 women had Peabody scores.
3
Defined as gestational age at delivery <37 wk.
4
Standardized for race, age and sex.