. Author manuscript; available in PMC: 2018 Jul 1.

Published in final edited form as: J Pediatr. 2017 Feb 28;186:34–40.e2. doi: 10.1016/j.jpeds.2017.02.003

Table 1.

Maternal and infant characteristics

Characteristic	Prophylactic Indomethacin N = 2,587	No Prophylactic Indomethacin N = 5,244	P-value
*Maternal*
Gestational hypertension, n (%)	741 (28.6)	1346 (25.7)	0.005
Rupture of membranes > 18 hr, n (%)	602 (23.3)	1437 (27.4)	<0.001
Antenatal antibiotics, n (%)	1805 (69.8)	3525 (67.2)	0.02
Antenatal corticosteroids, n (%)	2377 (91.9)	4645 (88.6)	<0.001
Cesarean section, n (%)	1740 (67.3)	3485 (66.5)	0.48
*Infant*
Gestational age, wk - mean (SD)	25.9 (1.5)	26.7 (1.6)	<0.001
Birth weight, g – mean (SD)	777 (197)	913 (246)	<0.001
Male, n (%)	1270 (49.1)	2744 (52.3)	0.007
Birth weight < 10^th percentile, n (%)	276 (10.7)	362 (6.9)	<0.001
Delivery room intubation or CPR, n (%)	1918 (74.1)	3465 (66.1)	<0.001
Intubated at 24 hr of life, n (%)	1721 (66.5)	2969 (56.6)	<0.001

CPR, cardiopulmonary resuscitation (includes chest compressions or treatment with epinephrine); SD, standard deviation