Table 1.
Neonatal Characteristics and Intrapartum Care: Comparison of Those With and Without Available Cord Blood Magnesium Concentration
| Mg Concentration Not Available n=924 | Mg Concentration Available n=1507 | P-Value | |
|---|---|---|---|
| Gestational age, wk* | 29.3 ± 3.4 | 30.0 ± 2.9 | <0.001 |
| Birth weight, g | 1324 ± 615 | 1472 ± 539 | <0.001 |
| Birth weight, ≤ 1500g | 633 (68.7) | 828 (54.9) | <0.001 |
| Female | 437 (47.3) | 710 (47.1) | 0.93 |
| Mode of Delivery | |||
| Vaginal (1456) | 502 (54.4) | 954 (63.3) | <0.001 |
| Cesarean (973) | 420 (45.6) | 553 (36.7) | |
| Race | |||
| African-American | 400 (43.3) | 645 (42.8) | 0.74 |
| Caucasian | 330 (35.7) | 580 (38.5) | |
| Hispanic | 176 (19.0) | 245 (16.3) | |
| Asian | 4 (0.4) | 16 (1.1) | |
| Native American | 1 (0.1) | 2 (0.1) | |
| Other | 13 (1.4) | 9 (1.3) | |
| 1-minute Apgar | 6 (4-8) | 7 (5-8) | <0.001 |
| 1-minute Apgar <5 | 293 (31.9) | 302 (20.1) | <0.001 |
| 5-minute Apgar | 8 (7-9) | 8 (7-9) | 0.09 |
| 5-minute Apgar <7 | 225 (24.5) | 229 (15.2) | <0.001 |
| General Anesthesia | 101 (12.5) | 103 (7.3) | <0.001 |
| Maternal Narcotics | 297 (36.7) | 521 (37.1) | 0.90 |
| Twin Gestation | 91 (11.1) | 112 (8.0) | <0.001 |
Data are presented as mean ± SD, n (%) or median (interquartile range)
*
Gestational age at delivery