Table 1.
Maternal & Labor Characteristics
| Internal Monitors (n=3,944) |
No Internal Monitors (n=2,501) |
|
|---|---|---|
| Maternal age (years) | 24.1 ± 5.9 | 24.9 ± 6.0 |
| Primiparous | 1,803 (45.7%) | 808 (32.3%) |
| Race | ||
| Asian | 60 (1.5%) | 75 (3.0%) |
| Black | 2,973 (75.4%) | 1,698 (67.9%) |
| Hispanic | 192 (4.9%) | 180 (7.2%) |
| White | 661 (17.8%) | 512 (20.5%) |
| Body Mass Index (kg/m2) | 31.9 (27.7–37.1) | 29.2 (25.9–33.4) |
| Obese (BMI ≥30.0) | 2,404 (62.4%) | 1,078 (44.9%) |
| Chronic Hypertension | 138 (3.5%) | 47 (1.9%) |
| Preeclampsia | 330 (8.4%) | 111 (4.4%) |
| Diabetes | 77 (2.0%) | 23 (0.9%) |
| Gestational Age at Delivery (wks) | 39.4 (38.4–40.3) | 39.3 (38.4–40.1) |
| Preterm Delivery (<37 weeks) | 132 (3.4%) | 121 (4.8%) |
| Labor Type | ||
| Induced | 1,572 (40.6%) | 520 (21.7%) |
| Augmented | 1,455 (37.5%) | 569 (23.8%) |
| Spontaneous | 850 (21.9%) | 1,305 (54.5%) |
| GBS | ||
| Negative | 883 (22.4%) | 691 (27.6%) |
| Positive | 1,080 (27.4%) | 597 (23.9%) |
| Unknown | 883 (22.4%) | 691 (27.6%) |
| Received Antibiotics for GBS | 582 (14.8%) | 301 (12.0%) |
| Regional Anesthesia | 3,675 (93.2%) | 1,852 (74.1%) |
| Time from Admission to Delivery (hrs) | 12.0 (7.4–18.9) | 5.8 (2.4–10.7) |
| Time from Rupture of Membranes to Delivery (hours) |
6.1 (3.2–10.8) | 1.9 (0.3–5.4) |
| Number of Exams | 6 (4–8) | 4 (3–5) |
Data presented as mean ± standard deviation, n(%), or median (interquartile range) as appropriate
All p<0.01