Dichotomous clinical variables adjusted for gestational age and clinical risk index for babies (CRIB) score
| Outcome | No ofdiagnoses (%) | Adjusted OR | p Value | |
|---|---|---|---|---|
| OR | 95% CI | |||
| Data were evaluated using logistic regression analysis. Adjusted ORs were obtained in a multivariate logistic regression. No significant effects of sex and intrauterine growth retardation were found in addition to gestational age at delivery and CRIB score. | ||||
| *CLD limited to the infants alive at 36 weeks postconceptional age. | ||||
| CLD, Chronic lung disease; IVH, intraventricular haemorrhage; NEC, necrotising enterocolitis; PDA, patent ductus arteriosus; OR, odds ratio. | ||||
| Death | 24 (10) | |||
| PDA insignificant | 6 (4) | 1.00 | ||
| PDA closed | 7 (11) | 1.13 | 0.31 to 4.15 | 0.849 |
| PDA open | 11 (33) | 4.02 | 1.12 to 14.51 | 0.033 |
| Death/CLD* at 36 weeks | 143 (57) | |||
| PDA insignificant | 68 (44) | 1.00 | ||
| PDA closed | 47 (72) | 1.22 | 0.55 to 2.66 | 0.627 |
| PDA open | 28 (85) | 1.67 | 0.50 to 5.69 | 0.400 |
| CLD* (n = 237) | 121 (51) | |||
| PDA insignificant | 64 (43) | 1.00 | ||
| PDA closed | 40 (67) | 1.13 | 0.53 to 2.35 | 0.778 |
| PDA open | 7 (63) | 0.58 | 0.20 to 1.67 | 0.315 |
| NEC | 17 (7) | |||
| PDA insignificant | 8 (5) | 1.00 | ||
| PDA closed | 5 (8) | 1.10 | 0.31 to 3.94 | 0.888 |
| PDA open | 4 (12) | 1.57 | 0.36 to 6.83 | 0.546 |
| IVH grade 3–4 | 18 (7) | |||
| PDA insignificant | 6 (4) | 1.00 | ||
| PDA closed | 8 (12) | 1.53 | 0.44 to 5.28 | 0.503 |
| PDA open | 4 (12) | 1.05 | 0.23 to 4.79 | 0.954 |