GMH-IVH grade | 0 | I | II | III | IV | W, P |
Decreased vein patency total | 0, (0) | 13.5, (12.8) | 15, (7.25) | 22, (8.75) | 20.5, (4.75) | 0, 1.032e−13 |
ILS total | 0, (0) | 1, (2) | 1.5, (1) | 2.5, (2.75) | 2, (2) | 121.5, 9.233e−11 |
Collateral total | 0, (0) | 2, (4.75) | 3.5, (1.75) | 3, (1.75) | 4, (2.75) | 108, 5.165e−11 |
Given the ordinal nature of GMH-IVH grade and the necessity for a non-parametric approach, medians were not used for statistical analysis, but are shown here for transparency. The Wilcoxon test statistics W and the p values provided in the last column are for the comparison of GMH 0 versus GMH I–IV levels (combined). GMH-IVH grade 0=normal neonate or control.
GMH-IVH, germinal matrix haemorrhage/intraventricular haemorrhage; ILS, increased lumen susceptibility.