ORs for the risk of MDI<70 determined using multiple logistic regression analysis
| OR (95% CI) | p Value | |
|---|---|---|
| Gestational age | 0.917 (0.636 to 1.322) | 0.64 |
| Birth weight | 0.997 (0.993 to 1.001) | 0.12 |
| SGA (yes or no)* | 2.370 (0.700 to 8.030) | 0.17 |
| Moderate or severe BPD† | 1.834 (0.917 to 3.668) | 0.086 |
| IVH grade 1–2 | 2.254 (1.024 to 4.959) | 0.043 |
| IVH grade 3–4 | 2.239 (0.898 to 5.579) | 0.084 |
| PVL (yes or no) | 3.230 (1.087 to 9.597) | 0.035 |
| NEC | 3.258 (1.083 to 9.795) | 0.036 |
| Hydrocortisone given (yes or no) | 2.191 (1.072 to 4.477) | 0.032 |
| Bicarbonate given (yes or no) | 1.584 (0.872 to 2.875) | 0.13 |
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 0.81.
*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; MDI, Mental Developmental Index; NEC, necrotising enterocolitis; PVL, periventricular leukomalacia; SGA, small for gestational age.