Table 3. Use of PNC by neonatal characteristics.
| PNC | P value | crude | Adj | ||||
|---|---|---|---|---|---|---|---|
| n/N | % | OR | 95% CI | OR* | 95% CI | ||
| GA | |||||||
| 24–25 | 242/748 | 32.4 | <0.0001 | 8.7 | 6.7–11.2 | 5.6 | 4.1–7.5 |
| 26–27 | 204/1276 | 16.0 | <0.0001 | 3.4 | 2.7–4.4 | 2.5 | 1.9–3.3 |
| 28–29 | 99/1893 | 5.2 | - | - | - | - | |
| Birthweight percentile | |||||||
| <10th | 79/363 | 21.8 | 2.0 | 1.5–2.6 | 2.1 | 1.5–3.0 | |
| 10-25th | 110/614 | 17.9 | 1.6 | 1.3–2.0 | 1.4 | 1.1–1.9 | |
| >25th | 356/2940 | 12.1 | <0.0001 | - | - | - | - |
| Sex | |||||||
| Female | 210/1778 | 11.8 | 0.001 | - | - | - | - |
| Male | 335/2139 | 15.7 | 1.4 | 1.2–1.7 | 1.4 | 1.1–1.8 | |
| Multiple pregnancy | |||||||
| Singleton | 392/2744 | 14.3 | 0.30 | - | - | - | - |
| Multiple | 153/1173 | 13.0 | 0.9 | 0.7–1.1 | 0.9 | 0.7–1.2 | |
| PROM | |||||||
| No | 413/2878 | 14.4 | 0.11 | - | - | - | - |
| Yes | 121/981 | 12.3 | 0.8 | 0.7–1.0 | 0.9 | 0.7–1.1 | |
| Preeclampsia/eclampsia/HELLP | |||||||
| No | 448/3313 | 13.5 | 0.16 | - | - | - | - |
| Yes | 88/558 | 15.8 | 1.2 | 0.9–1.5 | 1.1 | 0.8–1.6 | |
| Caesarean | |||||||
| No | 208/1341 | 15.5 | 0.03 | - | - | - | - |
| Yes | 332/2551 | 13.0 | 0.8 | 0.7–1.0 | 1.1 | 0.9–1.4 | |
| Inborn | |||||||
| No | 68/455 | 14.9 | 1.10 | 0.8–1.4 | 0.7 | 0.5–1.0 | |
| Yes | 476/3456 | 13.8 | 0.5 | - | - | - | |
| Apgar score <7 | |||||||
| No | 343/2807 | 12.2 | <0.0001 | - | - | - | - |
| Yes | 150/837 | 17.9 | 1.6 | 1.3–1.9 | 0.9 | 0.7–1.2 | |
| Treatments | |||||||
| Antenatal steroids | |||||||
| No | 62/419 | 14.8 | 0.62 | - | - | - | - |
| Yes | 482/3465 | 13.9 | 0.9 | 0.70–1.2 | 1.1 | 0.8–1.5 | |
| Surfactant | |||||||
| No | 36/927 | 3.9 | <0.0001 | - | - | - | - |
| Yes | 509/2983 | 17.1 | 5.1 | 3.6–7.2 | 1.3 | 0.8–1.9 | |
| Mechanical ventilation | |||||||
| No | 10/877 | 1.1 | <0.0001 | - | - | - | - |
| Yes | 534/3030 | 17.6 | 18.5 | 9.9–34.8 | 7.7 | 3.8–15.8 | |
| NSAIDs to treat PDA | |||||||
| No | 273/2789 | 9.8 | <0.0001 | - | - | - | - |
| Yes | 271/1110 | 24.4 | 3.0 | 2.5–3.6 | 1.8 | 1.5–2.3 | |
* adjusted on gestational age
SGA, sex, PROM, preeclampsia/eclampsia/HELLP:, caesarean section, apgar score, surfactant, mechanical ventilation, NSAIDs to treat PDA
OR: odds ratio; 95% CI: 95% confidence interval. n: number receiving PNC N: total in group