Table 3.

Relative risk for intraventricular hemorrhage, white matter injury and death in infants with 90^th percentile seizure burden on each day after birth

	0–24 hours (N=69)	24–48 hours (N=90)	48–72 hours (N=94)
Any Intraventricular hemorrhage	2.9 (1.4–5.8)	2.6 (1.4–4.8)	3.1 (1.9–5.3)
High grade intraventricular hemorrhage (Grade III & IV)	2.2 (0.4–12.1)	2.5 (0.8–8.3)	4.0 (1.5–10.8)
Any white matter injury†	2.3 (0.8–6.9)	3.0 (1.3–6.6)	1.4 (0.4–5.9)
Cystic white matter injury†	-	-	-
Death	1.7 (0.6–5.2)	2.7 (1.1–6.7)	1.6 (0.5–4.8)

Note: 95% confidence interval given in parantheses.“-”denotes insufficient data to calculate. Variation in sample size for each study day due to differences in age at time of recruitment and length of recording.

^†MRI analysis performed on a smaller subsample (n=55).