. Author manuscript; available in PMC: 2019 Sep 8.

Published in final edited form as: J Perinatol. 2019 Mar 8;39(5):599–607. doi: 10.1038/s41372-019-0347-4

Table 2:

Adjusted relative risk and 95% confidence interval of the relationships between the individual treatment groups and ductus constriction. The potential confounders in the model were: gestational age (<26 ^0/7 weeks or ≥26 ^0/7 weeks), antenatal betamethasone exposure (<24 hours or ≥24 hours), and Caucasian race (yes or no).

	Relative Risk	95% CI	p-value ^a
Treatment Group
Conservative	1.0
Acetaminophen	1.33	(0.55 – 3.24)
Ibuprofen	2.03	(1.05 – 3.91)	0.035
Indomethacin	3.21	(2.05 – 5.01)	<0.001
Gestation ≥26 ^0/7 weeks	1.21	(0.85 – 1.70)
Betamethasone ≥24 hours	0.78	(0.58 – 1.05)
Caucasian	1.14	(0.75 – 1.74)

^a,

p-value are presented only for values ≤0.10