Table 1.
Demographic and clinical characteristics at baseline, expressed as mean (SD) or %
| Baseline demographics | Total n =3422 | Nulliparous2 n = 1803 | Parous and no excessive PWG2,3 n = 948 | Parous and excessive PWG2,3 n = 671 |
|---|---|---|---|---|
|
| ||||
| % BMI | ||||
| Underweight (BMI < 18.5) | 8 | 8 | 9 | 6 |
| Normal (BMI 18.5 – 24.9) | 79 | 76 | 84 | 81 |
| Overweight (BMI 25 – 29.9) | 13 | 16 | 6 | 14 |
| Age, mean (SD) | 19.7 (2.2) | 19.7(2.2) | 19.9 (2.2) | 19.7(2.2) |
| % Race | ||||
| Non-Hispanic white | 54 | 57 | 52 | 52 |
| Non-Hispanic black | 19 | 18 | 20 | 22 |
| Hispanic | 14 | 12 | 16 | 15 |
| Other1 | 12 | 13 | 12 | 11 |
| % Married | 13 | 9 | 18 | 16 |
| % Urban residence | 80 | 82 | 78 | 78 |
| % Live below poverty line | 18 | 16 | 22 | 19 |
| Number of years of maternal education, mean (SD) | 11.2 (3.1) | 11.5 (3.2) | 10.9 (3.2) | 10.9 (2.9) |
1
Other includes Native Americans, Asians, and women who identified self as other.
2
Parity and excessive pregnancy weight gain status at the end of follow-up
3
PWG=pregnancy weight gain during the first pregnancy