Table 5

ORs for the risk of MDI<70 determined using multiple logistic regression analysis

OR (95% CI)p Value
Gestational age0.917 (0.636 to 1.322)0.64
Birth weight0.997 (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 1–22.254 (1.024 to 4.959)0.043
IVH grade 3–42.239 (0.898 to 5.579)0.084
PVL (yes or no)3.230 (1.087 to 9.597)0.035
NEC3.258 (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.