Table 3.
Main pregnancy and infant characteristics according to transfer day
| Day 3 (n = 93) |
Day 5 (n = 115) |
p value | |
|---|---|---|---|
| Median gestational age (days) (IQR) | 275 (267, 281) | 277 (270, 281) | 0.22 |
| Preterm birth (< 37 weeks) | |||
| Yes (%) | 7 (7.5) | 6 (5.2) | 0.49 |
| No (%) | 86 (92.5) | 109 (94.8) | |
| Liveborn gender | |||
| Female (%) | 33 (35.5) | 56 (48.7) | 0.056 |
| Male (%) | 60 (64.5) | 59 (51.3) | |
| Median liveborn birthweight (g) (IQR) Low birthweight (< 2500 g) | 3330 (3020, 3610) | 3236 (2930, 3630) | 0.40 |
| Yes (%) | 4 (4.3) | 7 (6.1) | 0.76 |
| No (%) | 89 (95.7) | 108 (93.9) | |
Continuous variables (gestational age and birthweight) were compared by Wilcoxon rank-sum test; preterm birth and liveborn gender were compared by Pearson’s chi-squared test; and low birthweight was compared by Fisher’s exact test