TABLE 1

Number of Births, Admissions, and Characteristics of Live-Born and Admitted Infants, Born in 2013–2014, GA 22 to 26 Weeks

22 Weeks23 Weeks24 Weeks25 Weeks26 Weeks22–26 Weeks
Births, live-births, and admissions to NICU
 Total births, n66728591106420
 Fetuses alive by admission to an obstetrical unit, n (% of all births)47 (71.2)55 (76.4)71 (83.5)74 (81.3)87 (82.1)334 (79.5)
 Live-births, n (% of all births)17 (25.8)42 (58.3)62 (72.9)70 (76.9)84 (79.2)275 (65.5)
 Admitted to NICU, n (% of live-births)5 (29.4)34 (81.0)60 (96.8)69 (98.6)83 (98.8)251 (91.3)
Characteristics/perinatal interventions of live-born infants
 Birth wt, median (IQR)500 (438–532)562 (504–611)665 (611–711)781 (667–835)860 (734–964)685 (575–830)
 Female, n (%)8 (47.1)21 (50.0)29 (46.8)33 (47.1)38 (45.2)129 (46.9)
 Singleton, n (%)14 (82.4)33 (78.6)45 (72.6)56 (80.0)68 (81.0)216 (78.5)
 Small for GA, <10th percentile, n (%)3 (17.6)9 (21.4)10 (16.1)15 (21.4)22 (26.2)59 (21.5)
 5 min Apgar score below 411 (68.8)14 (33.3)9 (15.0)3 (4.3)11 (13.4)48 (17.8)
 Born outside a regional designated NICU hospital,a n (%)8 (47.1)1 (2.4)4 (6.5)8 (11.4)2 (2.4)23 (8.4)
 Cesarean delivery, n (%)2 (11.8)5 (11.9)20 (32.3)35 (50.0)52 (61.9)114 (41.5)
 Antenatal steroids, n (%)6 (35.3)36 (85.7)58 (93.5)63 (90.0)76 (90.5)239 (86.9)
 Antenatal steroids given >24 h before birth, n (%)0 (0)25 (59.5)38 (61.3)43 (61.4)61 (72.6)167 (60.7)
 Surfactant in delivery room, n (%)4 (23.5)35 (83.3)54 (87.1)55 (78.6)63 (75.0)211 (76.7)
 Intubation in delivery room, n (%)5 (29.4)37 (88.1)58 (93.5)52 (74.3)47 (56.0)199 (72.4)
 Unsuccessful resuscitation, n (%)0 (0)6 (14.3)2 (3.2)1 (1.4)1 (1.4)10 (3.6)
Characteristics/treatment of infants admitted to NICU
 Clinical Risk Index for Babies, median (IQR)17 (16–17)16 (15–17)14 (13–15)12 (12–13)10 (10–12)13 (11–15)
 Mechanical ventilation, any, n (%)5 (100)34 (100)60 (100)66 (95.7)63 (75.9)228 (90.8)
 Mechanical ventilation before 3 d of age, n (%)5 (100)34 (100)57 (95.0)61 (88.4)52 (62.7)209 (83.3)
 Indomethacin or ibuprofen for PDA, n (%)0 (0)18 (52.9)27 (45.0)20 (29.0)17 (20.5)82 (32.7)
 Surgical ligation of PDA, n (%)0 (0)1 (2.9)7 (11.7)2 (2.9)2 (2.4)12 (4.8)
 Postnatal corticosteroids for BPD, n (%)3 (60.0)14 (41.2)35 (58.3)32 (46.4)29 (34.9)113 (45.0)
  • IQR, interquartile range; PDA, patent ductus arteriosus.

  • a Born outside of the 9 hospitals designated to treat infants <27 wk during the study period.