Table 1

Distribution of infants ⩽ 32 gestation weeks between small and large units subdivided by birthweight and gestation - non-transfers only1-150

LargeSmall
AllNo died (%)AllNo died (%)
Gestation (weeks)
 ⩽ 226  5 (83.3)3 3 (100.0)
 23-2445 35 (77.8)3332 (97.0)
 25-26102 50 (49.0)3419 (55.9)
 27-28143 37 (25.9)8922 (24.7)
 29-30205 18 (8.8)20012 (6.0)
 31-32447 15 (3.4)477 8 (1.7)
Birthweight (g)
 <5006  4 (66.7)5 5 (100.0)
 500-74983 57 (68.7)4335 (81.4)
 750-999126 52 (41.3)6321 (33.3)
 1000-1249155 20 (12.9)15117 (11.3)
 1250-1499189 10 (5.3)185 9 (4.9)
 1500+389 17 (4.4)389 9 (2.3)
Total948160 (16.9)83696 (11.5)
Predicted deaths n (%) 95% CI
 All ⩽ 28 weeks128.9  (43.5)114.7-143.474.1 (46.6)67.1-81.1
 All ⩽ 32 weeks150.5 (15.9)135.2-166.9105.5  (12.6)94.6-117.6
  • 1-150 Actual and expected mortality (calculated from CRIB) for infants ⩽ 32 weeks and for infants ⩽ 28 weeks gestation is also shown