Table 2 Regression analyses for antenatal factors predicting extensive resuscitation (N = 5298)
Antenatal factor | Univariate | Multivariate | ||
|---|---|---|---|---|
OR (95% CI) | P value | OR (95% CI) | P value | |
Gestational age | ||||
> 27 weeks | 1.0 (Reference) | 1.0 (Reference) | ||
25–27 weeks | 3.521 (2.600–4.768) | <.001 | 3.003 (1.977–4.562) | <.001 |
< 25 weeks | 7.510 (5.366–10.509) | <.001 | 4.921 (2.926–8.276) | <.001 |
Birth weight < 1000 g | 3.490 (2.678–4.547) | <.001 | 1.509 (1.013–2.246) | 0.043 |
Birth weight < 3rd percentile | 0.568 (0.340–0.950) | 0.031 | 0.836 (0.481–1.453) | 0.525 |
Male | 1.363 (1.059–1.753) | 0.016 | 1.329 (1.002–1.761) | 0.048 |
Maternal hypertension | 0.592 (0.412–0.847) | 0.004 | 1.047 (0.693–1.582) | 0.826 |
Amniotic fluid | ||||
Normal | 1.0 (Reference) | 1.0 (Reference) | ||
Oligohydramnios | 1.764 (1.293–2.407) | <.001 | 1.820 (1.286–2.575) | 0.01 |
Polyhydramnios | 4.447 (2.551–7.752) | <.001 | 6.203 (3.185–12.081) | <.001 |
Antenatal steroid | ||||
None | 2.082 (1.552–2.791) | <.001 | 2.164 (1.549–3.023) | <.001 |
Incomplete | 1.081 (0.789–1.481) | 0.626 | 0.989 (0.702–1.395) | 0.951 |
Complete | 1.0 (Reference) | 1.0 (Reference) | ||
Outborn | 2.017 (1.004–4.052) | 0.049 | 0.903 (0.209–3.902) | 0.891 |
Chorioamnionitis | 1.612 (1.230–2.112) | 0.001 | 1.143 (0.851–1.536) | 0.374 |