Age yrs | 29.1±6.1 |
Race/ethnicity n | 984 |
White, non-Hispanic % | 69 |
Black, non-Hispanic % | 10 |
Hispanic % | 16 |
Asian % | 3 |
Other % | 2 |
BMI | |
Pre-pregnancy | 26.1±6.2 |
At delivery | 32.1±6.3 |
Weight gain lbs | 34.7±16.2 |
Neck circumference cm | 36±2.7 |
Cigarette smoking n | 998 |
Nonsmoker % | 76 |
Prior to pregnancy % | 14 |
Current smoker % | 9 |
Medical conditions | |
DM, type I or II % | 0.7 |
Gestational diabetes % | 10 |
Pregnancy induced hypertension, current or prior pregnancy % | 11 |
Pre-eclampsia, current or prior pregnancy | 8 |
Multi-gestational pregnancy % | 2.5 |
Delivery method n | 1000 |
Vaginal % | 53 |
Cesarean section % | 33 |
Vaginal to Cesarean section % | 14 |
Birth weight (total) g | 3265±667 |
Singles | 3312±635 |
Multiples | 2345±611 |
Low birth weight (<2500 g) % | 9.9 |
Small for gestational age (total) % | 3.4 |
Singles % | 2.9 |
Multiples % | 12.5 |
Data are presented as mean±sd, unless otherwise stated. BMI: body mass index; DM: diabetes mellitus. Percentages may not sum to 100% due to rounding.