Table 1 Clinical characteristics of the study cohort
From: Validation of the DIGIROP-birth model in a Chinese cohort
Variables | No TR-ROP (n = 349) | TR-ROP (n = 93) | P |
|---|---|---|---|
| Â | Mean (SD) | Mean (SD) | Â |
Maternal factors | |||
 Maternal age, years |  |  | 0.451 |
  25–30 | 125 (36.9) | 30 (33.0) |  |
  < 25 | 60 (17.7) | 16 (17.6) |  |
  30–35 | 101 (29.8) | 29 (31.9) |  |
  > 35 | 53 (15.6) | 16 (17.6) |  |
 Caesarean delivery | 135 (38.7) | 29 (31.2) | 0.183 |
 Multiple gestations | 81 (23.2) | 15 (16.1) | 0.141 |
 In vitro fertilization | 43 (12.3) | 10 (10.8) | 0.679 |
 Gestational hypertension | 23 (6.7) | 10 (10.8) | 0.175 |
 Gestational diabetes | 54 (15.5) | 15 (16.1) | 0.877 |
 Reproductive tract infections during pregnancy | 31 (8.9) | 5 (5.4) | 0.272 |
 Antenatal steroids use | 82 (23.5) | 14 (15.1) | 0.079 |
Neonatal factors | |||
 Gestational age, weeks | 29.0 ± 1.2 | 28.2 ± 1.5 | < 0.001 |
 Birth weight, g | 1267.8 ± 230.5 | 1121.5 ± 226.3 | < 0.001 |
 Male | 234 (67.0) | 52 (55.9) | 0.046 |
 Apnea | 97 (27.8) | 36 (38.7) | 0.041 |
 Respiratory distress syndrome | 263 (75.4) | 75 (80.6) | 0.285 |
 Bronchopulmonary dysplasia | 197 (56.4) | 62 (66.7) | 0.075 |
 Sepsis | 105 (30.1) | 27 (29.0) | 0.891 |
 Necrotizing enterocolitis | 36 (10.3) | 14 (15.1) | 0.2 |
 Intraventricular hemorrhage | 130 (37.2) | 46 (49.5) | 0.034 |
 Patent ductus arteriosus | 130 (37.2) | 36 (38.7) | 0.796 |
 Anaemia | 178 (51.0) | 49 (52.7) | 0.804 |
 Hyperbilirubinemia | 215 (61.6) | 53 (57.0) | 0.418 |
Neonatal interventions | |||
 Invasive mechanical ventilation | 325 (93.1) | 87 (93.5) | 0.885 |
 Blood transfusions | 305 (87.4) | 88 (94.6) | 0.074 |