Table 2

Perinatal care procedures for extremely preterm infants born alive by gestational age

Variable, N (% in column)22 weeks
N=56
23 weeks
N=89
24 weeks
N=185
25 weeks
N=300
26 weeks
N=406
Total
N=1036
Antenatal corticosteroids
 Yes1 (2)10 (12)101 (57)222 (77)321 (80)655 (65)
 Missing18710632
Tocolysis
 Yes18 (33)38 (46)109 (61)207 (70)246 (62)618 (61)
 Missing1774625
Caesarean delivery
 Yes4 (7)4 (5)24 (14)99 (34)242 (60)373 (37)
 Missing1285319
Level of maternity unit
 I8 (14)9 (10)5 (3)14 (5)15 (4)51 (5)
 II27 (48)24 (27)33 (18)32 (11)39 (10)155 (15)
 III21 (38)56 (63)147 (79)254 (85)352 (87)830 (80)
Birth weight
 Mean (g)487573675757845748
 Min–max (g)330–750330–780300–920350–1130395–1340300–1340
 Missing222006
Oxygen therapy
 Yes1 (2)9 (14)109 (67)238 (82)324 (83)681 (71)
 Missing62323101678
Nasal continuous positive airway pressure
 Yes0 (0)8 (12)95 (61)220 (77)299 (80)622 (67)
 Missing523291431102
Endotracheal intubation
 Yes1 (2)6 (9)115 (70)261 (89)370 (93)753 (77)
 Missing522206962
Chest compression
 Yes1 (2)2 (3)11 (7)34 (12)43 (11)91 (10)
 Missing52324141581
Epinephrine administration
 Yes0 (0)0 (0)7 (4)18 (6)21 (6)46 (5)
 Missing524262131107
Withholding or withdrawal of intensive care in delivery room
 Yes47 (96)67 (91)65 (38)23 (8)11 (3)213 (22)
 Missing7151341453