Table 6

ORs for the risk of PDI<85 determined using multiple logistic regression analysis

OR (95% CI)p Value
Birth weight1.000 (0.998 to 1.002)0.91
SGA (yes or no)*1.827 (0.786 to 4.245)0.16
Moderate or severe BPD†2.124 (1.024 to 4.405)0.043
IVH grade 1–22.665 (1.252 to 5.669)0.011
IVH grade 3–44.820 (1.682 to 13.813)0.0034
PVL (yes or no)1.959 (0.570 to 6.736)0.29
NEC5.706 (1.229 to 26.498)0.026
Hydrocortisone given (yes or no)1.584 (0.7687 to 3.267)0.21
  • 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 0.72.

  • *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.