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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Pediatr. 2014 Jul 22;165(6):1104–1108.e1. doi: 10.1016/j.jpeds.2014.06.018

Table 1. Baseline Characteristics.

iNO
N= 59
Control
N= 65
P

Birth weight – g 961 ± 186 968 ± 159 0.82
Birth weight strata:
 500-749 grams 669.3 ± 68.8 698.3 ± 41.6 0.29
 750-999 grams 867.1 ± 71.5 878.6 ± 55.6 0.58
 1000-1250 grams 1102.1 ± 91.1 1091.1 ± 74.3 0.58

Gestational Age 27.5 ± 1.6 27.3 ± 1.8 0.59

Male sex – no. (%) 24 (40.7) 31 (47.7) 0.47

Mother's race/ethnic group –no. (%)
 White 48 (81) 48 (74) 0.39
 Black 8 (14) 11 (17)
 Other 3(5) 6(9)

Inborn – no. (%) 49 (83) 48 (88) 0.61

Antenatal corticosteroids – no. (%) 47 (80) 52 (80) 0.96

1-minute Apgar score median (IQ range) 2 (1-4) 2 (1-3) 0.16

5-minute Apgar score median (IQ range) 7 (1-9) 7 (2-9) 0.10

Maternal complications – no. (%)
 Cesarean delivery 31 (52) 29 (45) 0.47
 Chorioamnionitis 10 (17) 15 (23) 0.50
 Preeclampsia 8 (14) 9 (14) 0.99
 Multiple gestation 21 (36) 19 (29) 0.56
 Diabetes 3 (5) 5 (8) 0.72

Age at randomization (hours) 44.1±18.4 40.5 ±18.1 0.27

Mean ± SD, median-range or no. (%)