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Table 4 Observed values, and standard errors (SEs) and bootstrapped standard errors, for the SMR and CMF for nine centres in the DAVROS data

From: Direct risk standardisation: a new method for comparing casemix adjusted event rates using complex models

Centre SMR CMF
  Observed value SE (theoretical) SE (bootstrap) Observed value SE (theoretical) SE (bootstrap)
A 1.03 0.095 0.076 1.06 0.083 0.077
B 1.19 0.084 0.069 1.19 0.076 0.070
C 0.92 0.061 0.046 0.90 0.053 0.047
D 0.95 0.097 0.083 0.97 0.094 0.089
E 0.99 0.109 0.090 1.01 0.099 0.092
F 0.84 0.098 0.081 0.84 0.091 0.084
G 1.01 0.115 0.101 1.02 0.102 0.101
H 0.98 0.131 0.105 0.96 0.114 0.112
I 1.08 0.129 0.104 1.08 0.111 0.106