TABLE 4.

Odds ratios (OR) and 95% confidence interval (CI) for intraventricular hemorrhage comparing infants with a permissive hypercapnia and normocapnia strategy of care, by one-minute Apgar score

Apgar score	N†	OR*	95% CI
1	32	3.6	1.1, 11.2
2	32	2.5	1.0, 6.3
3	31	1.8	0.88, 3.7
4	35	1.3	0.71, 2.3
5	71	0.91	0.51, 1.6
6	69	0.65	0.32, 1.3
7	51	0.46	0.19, 1.1
8	38	0.33	0.11, 0.99
9	7	0.23	0.06, 0.90

^*adjusted for gestational age, sex, outborn status, antenatal steroids, and revised SNAP-II

^†Apgar score was missing for 5 infants