Table I.
Characteristics of the Study Cohort
| N=3,797 | % | |
|---|---|---|
|
| ||
| Mean Maternal Age (years) * | 24.9 ± 5.8 | - |
|
| ||
| Primiparous | 1,414 | 37% |
|
| ||
| Multiparous | 2,383 | 63% |
|
| ||
| Race | ||
| Caucasian Race | 621 | 16.4% |
| African American Race | 2,826 | 74.4% |
| Hispanic Race | 218 | 5.7% |
| Asian Race | 74 | 2.0% |
| Other | 58 | 1.5% |
|
| ||
|
Mean Gestational Age at the
Time of Delivery (weeks) * |
38.9 ± 1.2 | - |
|
| ||
| Mean Birth Weight (grams) * | 3279 ± 439 | - |
|
| ||
| Birth Weight >4000 grams | 221 | 5.8% |
|
| ||
| Birth Weight <2500 grams | 116 | 3.1% |
|
| ||
| Mode of Delivery | ||
| Spontaneous Vaginal Delivery | 3,253 | 85.7% |
| Operative Vaginal Delivery | 487 | 12.8% |
| Cesarean Delivery | 57 | 1.5% |
|
| ||
| Mean Maternal BMI (kg/m 2 ) * | 31.7 ± 6.8 | - |
|
| ||
| Spontaneous Labor | 2,613 | 68.8% |
|
| ||
| Induction of Labor | 1,184 | 31.2% |
|
| ||
| Gestational Diabetes | 96 | 2.5% |
|
| ||
| Pre-Existing Diabetes | 116 | 3.1% |
|
| ||
| Chronic Hypertension | 454 | 12.0% |
|
| ||
| Pre-Eclampsia | 366 | 9.6% |
*
Data expressed as mean ± standard deviation
BMI=body mass index