Table 4.

Odds Ratios Estimating the Strength of Association Between Variables Present Within 6 Hours of Birth and Perinatal Arterial Ischemic Stroke

Variable	Unadjusted Estimates			Adjusted Estimates
	OR	95% CI	P	OR	95% CI	P
Nonreassuring fetal heart rate tracing	0.10	0.03–0.37	<.001	0.18	0.04–0.71	.015
Sentinel event	0.11	0.01–0.93	.043
5-min Apgar score less than 7	0.07	0.02–0.24	<.001	0.12	0.03–0.51	.004
Cord pH (per 0.1 increment)	2.19	1.13–4.25	.021
Initial neonatal pH (per 0.1 increment)	1.90	1.20–3.00	.006
Initial platelet count (per 100 increment)	3.80	1.42–10.19	.008	2.50	0.72–8.68	.149
Initial nucleated red blood cell count (per 1,000 increment)	0.63	0.22–1.85	.402
Birth weight (per 500 increment)	1.86	1.13–3.07	.015

OR, odds ratio; CI, confidence interval.

Adjusted estimates are from the most parsimonious model based on Akaike Information Criterion.