Table 1; online.
Characteristics of infants who received no betamethasone or betamethasone ≤6 hours prior to delivery and those who received a two-dose course of betamethasone ≥24 hours prior to delivery
| Characteristic | Time to delivery after 1st dose of betamethasone | ||
|---|---|---|---|
|
| |||
| None or ≤ 6 hours N= 183 |
≥24 hours N= 429 |
P value | |
|
| |||
| Birth year epoch (%) | 0.03 | ||
| 1998 – 2003 | 46 | 37 | |
| 2004 – 2009 | 36 | 35 | |
| 2010 – 2015 | 19 | 28 | |
|
| |||
| Preeclampsia (%) | 4 | 23 | <0.0001 |
|
| |||
| Gestational Diabetes (%) | 3 | 8 | 0.03 |
|
| |||
| Clinical Chorioamnionitis (%) | 14 | 26 | 0.02 |
|
| |||
| Cesarean Delivery (%) | 59 | 69 | 0.02 |
|
| |||
| Presentation at delivery (%) | 0.94 | ||
| Vertex | 59 | 60 | |
| Breech | 35 | 34 | |
| Transverse | 6 | 6 | |
|
| |||
| Multiple Birth (%) | 28 | 35 | 0.11 |
|
| |||
| Caucasian (%) | 35 | 48 | 0.02 |
|
| |||
| Outborn (%) | 80 | 9 | <0.0001 |
|
| |||
| Gestational age <26 weeks (%) | 58 | 39 | <0.0001 |
|
| |||
| Gestational age (mean ± SD) | 25.6 ± 1.2 | 26.1 ± 1.1 | <0.0001 |
|
| |||
| Small for gestational age (%) | 6 | 20 | <0.0001 |
|
| |||
| Birth weight (mean ± SD) | 830 ± 188 | 803 ± 197 | 0.12 |
|
| |||
| Male | 59 | 49 | 0.04 |
|
| |||
| 5 minute Apgar score ≥6 (%) | 55 | 71 | <0.0001 |
|
| |||
| Prophylactic indomethacin (%) | 72 | 70 | 0.77 |
|
| |||
| Early Onset Sepsis (%) | 4 | 5 | 0.64 |