Birth prevalence of RH by baseline characteristics in universal newborn eye screening
| Characteristic | RH absent mean (SD) n=296 n (%), mean±SD | RH present mean (SD) n=50 n (%), mean±SD | P value | OR (95% CI) |
| Gender | 0.26 | |||
| Male | 155 (53) | 22 (44) | ||
| Female | 141 (48) | 28 (56) | ||
| Early screening | 0.014 | |||
| <72 hours | 218 (74) | 45 (90) | 1.0 | |
| ≥72 hours | 78 (26) | 5 (10) | 0.36 (0.13 to 0.98) | |
| Delivery modality | <0.001 | |||
| CS | 162 (55) | 2 (4) | 1.0 | |
| SVD | 104 (35) | 35 (70) | 26.30 (6.18 to 111.91) | |
| IVD | 30 (10) | 13 (26) | 33.61 (7.18 to 157.26) | |
| Age at screening (days) | 3.7±4.7 | 2.3±1.6 | <0.001 | |
| BW (g) | 3272±575 | 3353±449 | 0.35 | |
| HC (cm) | 34.6±1.8 | 34.4±1.3 | 0.46 | |
| Birth length (cm) | 50.5±2.8 | 50.9±1.8 | 0.23 | |
| Maternal height (cm) | 164.9±7.1 | 164.5±7.0 | 0.76 | |
| GA (weeks) median (IQR) | 39.0 (38–40) | 39.4 (38–40) | 0.042 U=6072 |
RH, retinal haemorrhage, reported at the participant level (ie, a haemorrhage in either eye or both eyes classifies that neonate into retinal haemorrhage present group).
BW, birth wt; CS, caesarean section; GA, gestational age; HC, head circumference; IVD, instrumental vaginal delivery; SVD, spontaneous vaginal delivery.