Table 1 An example of mortality rates for babies <33 weeks’ gestation in 18 hospitals. Expected mortality is based on CRIB II estimates
HospitalActual deathsExpected deathsMortality ratio (95% CI)
187.91.01 (0.48 to 1.54)
22221.21.04 (0.73 to 1.35)
342.91.38 (0.73 to 2.03)
443.41.18 (0.20 to 2.15)
52624.41.07 (0.78 to 1.35)
63028.81.04 (0.77 to 1.31)
72019.21.04 (0.70 to 1.38)
8910.20.88 (0.43 to 1.33)
910.91.11 (0.00 to 2.88)
1066.70.90 (0.31 to 1.48)
113337.90.87 (0.63 to 1.11)
1256.40.78 (0.09 to 1.47)
1388.20.98 (0.44 to 1.52)
1412.40.42 (0.00 to 1.43)
1599.60.94 (0.49 to 1.39)
1644.40.91 (0.11 to 1.71)
1753.31.52 (0.62 to 2.41)
18108.01.25 (0.81 to 1.69)
  • None show significantly different performance compared with predicted.