ORs for the risk of PDI <70 determined using multiple logistic regression analysis
| OR (95% CI) | p Value | |
|---|---|---|
| Gestational age | 1.007 (0.737 to 1.377) | 0.96 |
| Birth weight | 1.00 (0.997 to 1.003) | 0.98 |
| SGA (yes or no)* | 1.826 (0.607 to 5.494) | 0.28 |
| Moderate or severe BPD† | 1.934 (0.987 to 3.787) | 0.055 |
| IVH grade 1–2 | 2.227 (1.092 to 4.541) | 0.028 |
| IVH grade 3–4 | 3.988 (1.622 to 9.802) | 0.0026 |
| PVL (yes or no) | 1.365 (0.476 to 3.914) | 0.56 |
| NEC | 4.491 (1.359 to 14.837) | 0.014 |
| Hydrocortisone given (yes or no) | 2.303 (1.154 to 4.598) | 0.018 |
| Bicarbonate given (yes or no) | 1.311 (0.759 to 2.265) | 0.33 |
All factors listed in this table were shown to be statistically significant using univariate regression analysis.
Adjusted p values from multiple logistic regression model.
The c-statistic for this model is 0.75.
*SGA defined as birth weight <10th percentile.
†BPD according to the trial definition, corresponding to moderate or severe BPD according to the consensus definition.32
BPD, bronchopulmonary dysplasia; IVH, intraventricular haemorrhage; NEC, necrotising enterocolitis; PDI, Psychomotor Developmental Index; PVL, periventricular leukomalacia; SGA, small for gestational age.