TABLE 3.
Delivery Characteristics Among Singleton Infants Eligible for the VON NER, 2006–2010
| Characteristic | N | Cases | Mean |
|---|---|---|---|
| Male | 4162 | 2424 | 58.2 |
| Mode of delivery | |||
| Spontaneous vaginal | 4161 | 1399 | 33.6 |
| Vacuum or forceps | 4161 | 444 | 10.7 |
| Cesarean delivery | |||
| After labor | 4161 | 1400 | 33.6 |
| After labor with failed vacuum or forceps | 4161 | 97 | 2.3 |
| No labor | 4161 | 821 | 19.7 |
| Apgar score ≤3 | |||
| 1 min | 4115 | 2919 | 70.9 |
| 5 min | 4116 | 2041 | 49.6 |
| 10 min | 3212 | 785 | 24.4 |
| Fetal heart rate | |||
| Bradycardia | 3612 | 1212 | 33.6 |
| Tachycardia | 3536 | 267 | 7.6 |
| Decreased variability | 3398 | 876 | 25.8 |
| Prolonged decelerations | 3479 | 1237 | 35.6 |
| Any heart rate abnormality | 3728 | 2234 | 59.9 |
| Birth injury | |||
| Skull fracture | 4138 | 67 | 1.6 |
| Limb or clavicle fracture | 4138 | 58 | 1.4 |
| Brachial plexus injury | 4137 | 91 | 2.2 |
| Spinal cord injury | 4138 | 4 | 0.1 |
| Any but cephalohematoma/other trauma | 4138 | 202 | 4.9 |
| Meconium aspiration syndrome | 4160 | 511 | 12.3 |
| Placenta to laboratory | 2384 | 1326 | 55.6 |
| Cord blood sampled | 3637 | 1914 | 52.6 |
| Worst, pH <7.09 | 1898 | 1024 | 54.0 |
| Worst base deficit >12 | 1660 | 767 | 46.2 |