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From:
Published online Apr 4, 2012. doi: 10.1186/1471-2431-12-43
Table 3
Baseline characteristics of the study participants
Variable*BP-NCPAP
(N = 67)
NCPAP
(N = 69)
P value
Gestational age (weeks) [Mean (SD)]27.3 ± 1.927.4 ± 1.70.60

Birth weight (grams) [Mean (SD)]901 ± 200896 ± 1560.86

Male [N (%)]39 (58%)31 (44%)0.13

Apgar score (1 minute) [Median (IQR)]5 (3, 7)5 (2, 7)0.56

Apgar score (5 minutes) [Median (IQR)]8 (7, 9)8 (7, 9)0.63

Mode of ventilation [N (%)]
IPPV50 (75%)51 (74%)0.85
HFOV14 (21%)16 (23%)
HFJV3 (4%)2 (3%)

Age at first extubation (days) [Median (IQR)]3 (1-67)3 (1-62)0.85

Time of blood gas prior to extubation (hours) [Median (IQR)]9 (5, 14)7 (5, 12)0.15

Blood gas prior to extubation [Mean (SD)]

pH7.3 ± 0.17.3 ± 0.10.12

PCO247.1 ± 11.048.5 ± 10.90.48

FiO2 [Mean (SD)]0.24 ± 0.060.26 ± 0.080.40

Fulfilled preset extubation criteria [N (%)]47 (70%)55 (80%)0.20

Accidental extubation in infants who did not meet preset extubation criteria [N (%)]6 (9%)7 (10%)0.98

Surfactant administration [N (%)]61 (91%)66 (96%)0.32

Caffeine administration [N (%)]65 (97%)64 (92%)0.44
*FiO2 = Fraction of inspired oxygen, HFJV = High frequency jet ventilation, HFOV = High frequency oscillatory ventilation, IPPV = Intermittent positive pressure ventilation, IQR = Inter-quartile range, N = Number, % = Percent, SD = Standard deviation
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