Table 2.

Gestational and postmenstrual ages for control and ELBW infants

	Number of subjects	Gestational age (weeks)	Postmenstrual age at MRI (weeks)	P value of postmenstrual age compared to controls*
Controls (term infants)	n = 10	39.0 ± 0.9	41.2 ± 1.0	N/A
ELBW infants withoutblood product deposition on MRI	n = 9	25.2 ± 1.2	40.1 ± 1.0	0.05
ELBW infants withblood product deposition on MRI but no IVH diagnosis	n = 9	25.2 ± 1.4	40.4 ± 1.1	0.18
ELBW infants with grades 1 or 2 IVH diagnosis	n = 8	24.7 ± 1.2	41.1 ± 3.7	0.51
ELBW infants with grades 3 or 4 IVH diagnosis	n = 7	25.3 ± 1.3	40.4 ± 2.7	0.16

^*:P>0.05 for the age comparison between any ELBW groups