Table 3

Clinical characteristics of infants admitted to NICUs with gestational age below 28 weeks or birth weight below 1000g in 1994–95

TrentDenmarkp Value
Birthweight, g mean (SD)830.5 (182.7)869.4 (192.7)0.0019*
Gestational age, weeks mean (SD)26.4 (2.1)26.6 (2.0)0.2386*
CRIB score (median, IQ range)7 (4 to 11)4 (1 to 7)<0.0001†
Length of stay, days (surviving infants) (median, IQ range)81 (60 to 105)78 (67 to 92)0.5624†
Total489420
n (%)n (%)p Value for χ2 test
*t test; †Wilcoxon test.
CRIB, Clinical Risk Index for Babies; CPAP, continuous positive airway pressure.
Male273 (55.8)221 (52.6)0.3331
Multiple132 (26.4)145 (34.5)0.0077
Antenatal Steroids334 (68.3)234 (55.7)0.0020
Caesarean section229 (46.8)242 (57.6)0.0012
Transport220 (45.0)171 (40.7)0.1943
Surfactant303 (62.0)172 (41.0)<0.0001
Ventilator treatment430 (87.9)168 (40.0)<0.0001
CPAP treatment112 (22.9)348 (82.8)<0.0001
Oxygen at day 28 (of infants alive on day 28)208 (67.8)148 (51.9)<0.0001
Neonatal mortality (<28 days)182 (37.2)135 (32.1)0.1094
Total mortality207 (42.3)147 (35.0)0.0238