Univariable analysis: variables associated with all IVH
| IVH | No IVH | IVH vs no IVH | ||||
|---|---|---|---|---|---|---|
| N | % | N | % | OR (95% CI) | p Value | |
| IDM | 243 | 1.2 | 5708 | 3.3 | 0.36 (0.31 to 0.41) | <0.001 |
| Maternal HTN | 197 | 1 | 2306 | 1.3 | 0.73 (0.63 to 0.84) | <0.001 |
| Polycythaemia | 44 | 0.2 | 821 | 0.5 | 0.46 (0.34 to 0.62) | <0.001 |
| Down syndrome | 24 | 0.1 | 600 | 0.3 | 0.34 (0.23 to 0.51) | <0.001 |
| CS birth | 3004 | 14.7 | 26 241 | 15.1 | 0.98 (0.94 to 1.02) | 0.219 |
| Hypoglycaemia | 1924 | 9.4 | 13 687 | 7.9 | 1.22 (1.16 to 1.29) | <0.001 |
| Hypothermia | 245 | 1.2 | 1804 | 1 | 1.16 (1.02 to 1.33) | 0.028 |
| PDA | 6221 | 30.5 | 25 614 | 14.7 | 2.55 (2.47 to 2.63) | <0.001 |
| NEC | 1748 | 8.6 | 4921 | 2.8 | 3.23 (3.05 to 3.42) | <0.001 |
| Neonatal sepsis | 7955 | 39 | 39 931 | 22.9 | 2.15 (2.09 to 2.22) | <0.001 |
| Chest tube | 950 | 4.7 | 4791 | 2.7 | 1.73 (1.61 to 1.86) | <0.001 |
| Intubation-ventilation | 14 216 | 69.7 | 85 946 | 49.3 | 2.37 (2.29 to 2.44) | <0.001 |
| UV catheterisation | 8891 | 43.6 | 49 184 | 28.2 | 1.97 (1.91 to 2.03) | <0.001 |
| Hypothyroidism | 122 | 0.6 | 709 | 0.4 | 1.47 (1.22 to 1.79) | <0.001 |
| Intrauterine hypoxia | 124 | 0.6 | 963 | 0.6 | 1.10 (0.91 to 1.33) | 0.314 |
| Pneumothorax | 148 | 0.7 | 758 | 0.4 | 1.67 (1.40 to 2.00) | <0.001 |
| Pulmonary haemorrhage | 1149 | 5.6 | 1737 | 1 | 5.93 (5.50 to 6.40) | <0.001 |
| Twin pregnancy | 3233 | 15.9 | 27 077 | 15.5 | 1.02 (0.98 to 1.07) | 0.235 |
CS, caesarean; HTN, hypertension; IDM, infant of diabetic mother; IVH, intraventricular haemorrhage; NEC, necrotising enterocolitis; PDA, patent ductus arteriosus; UV, umbilical venous.