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. 2022 Feb 17;12:726322. doi: 10.3389/fcimb.2022.726322

Table 1.

Clinical features of the infants enrolled in this study.

FT (n=13) FI (n=14) Χ2 /Z/t P
Male, % (n) 46.2 (6) 57.1 (8) / 0.427
Admission age, median (IQR), h 2.00 (1.00-29.43) 1.78 (1.00-2.25) 0.399 0.528
Gestational age, median (IQR), w 29.14 (28.07-29.43) 28.93 (27.61-29.50) 0.216 0.642
Birth weight, ¯x± S. D, g 1173.85 ± 177.132 1110.14 ± 199.943 0.874 0.391
Cesarean section, % (n) 53.8 (7) 64.3 (7) / 0.436
PROM, % (n) 38.5 (5) 28.6 (4) / 0.445
Intrauterine distress, % (n) 7.7 (1) 21.4 (3) / 0.327
Maternal hypertension, % (n) 7.7 (1) 28.6 (4) / 0.186
Gestational diabetes mellitus, % (n) 38.5 (5) 21.4 (3) / 0.293
Antenatal steroid exposure, % (n) 76.9 (10) 64.3 (9) / 0.385
Apgar 1 minute, ¯x± S. D 7.15 ± 1.519 6.14 ± 2.568 1.232 0.229
Apgar 5 minutes, ¯x± S. D 8.62 ± 1.261 8.21 ± 1.188 0.851 0.403
Age of FI, ¯x± S. D, d / 13.07 ± 5.136 / /
Weight gain, ¯x± S. D, g
14 d 195.91 ± 74.021 149.36 ± 117.420 1.112 0.279
28 d 615.50 ± 188.819 484.82 ± 138.233 1.822 0.084
Antibiotic course, median (IQR), d 7.00 (4.00,10.50) 11.00 (6.00,18.00) 1.824 0.068
PICC, % (n) 100.0 (13) 92.9 (13) / 0.519
PICC period, median (IQR), d 24.00 (19.50-25.50) 22.00 (17.50-23.00) 2.641 0.104
Endotracheal intubation, % (n) 42.6 (6) 57.1 (8) / 0.427
Endotracheal intubation course, median (IQR), d 4.00 (2.75-5.00) 5.5 (3.25-15.25) 1.305 0.192
Milking age, median (IQR), h 0.00 (0.00-1.00) 1.00 (0.00-2.50) 2.089 0.148
Infants receiving donor milk, % (n) 100.0 (13) 78.6 (11) / 0.222
Feeding amount, ml/3 h
14 d, ¯x± S. D, ml/3 h 19.92 ± 3.753 13.85 ± 5.475 3.206 0.004
28 d, median (IQR), ml/3 h 36.00 (33.25-37.75) 25.00 (10.00-36.50) 6.314 0.012
Fasting, % (n) 30.8 (4) 78.6 (11) / 0.017
Pumping feeding, % (n) 30.8 (4) 71.4 (10) / 0.035
Parenteral nutrition courses, median (IQR), d 25.00 (22.00,28.00) 28.00 (28.00-28.00) 1.704 0.004
hospital stays, ¯x± S. D, d 56.15 ± 12.562 71.29 ± 16.297 2.686 0.013

FI, feeding intolerance; FT, feeding tolerance; S. D, Standard Deviation; IQR, interquartile range; PROM, premature rupture of membranes >18 h; PICC, peripherally inserted central catheter.