Measure | No ventricular dilatation (n=112) | Non-progressive ventricular dilatation (n= 53) | Progressive ventricular dilatation (n=56) | p Value |
---|---|---|---|---|

Where applicable, values are mean (SD). The test of significance was based on the χ^{2} test of independence for dichotomous measures and one way analysis of variance for continuous measures. | ||||

*Pco_{2} values for nine children who were not ventilated were set to an arbitrary value of 40. Excluding these nine children does not materially alter the strength of this association. | ||||

IVH, Intraventricular haemorrhage. | ||||

% Male | 54.1 | 68.5 | 55.4 | > 0.15 |

Gestation (weeks) | 27.9 (2.7) | 26.2 (2.2) | 26.2 (2.0) | < 0.0001 |

Birth weight (g) | 1053 (285) | 965 (297) | 938 (273) | < 0.05 |

CRIB score | 4.6 (4.1) | 6.0 (4.2) | 7.1 (4.1) | < 0.001 |

% Maximum IVH grade 3 or 4 | 0.0 | 29.6 | 80.4 | <0.0001 |

Maximum Pco_{2}* | 53.6 (14.0) | 62.2 (16.3) | 60.1 (15.6) | < 0.001 |

% Hypertension | 51.4 | 46.3 | 50.0 | > 0.8 |

% Inotropic support | 45.9 | 63.0 | 75.0 | < 0.001 |

% Antenatal steroids | 81.1 | 77.8 | 69.6 | >0.20 |