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Table 3 Frequency with which each candidate variable was selected using backwards model selection in 1000 bootstrap samples

From: Impact of data source and time reference of functional status on hospital mortality prediction

Variable Model Including Pre-admission ADL Impairment Model Including On-admission ADL Impairment
  Interview Medical Record Interview Medical Record
ADL impairment 1000 1000 1000 614
Pneumonia 996 994 969 999
AMI 945 961 971 963
Renal Failure 828 841 838 832
Sepsis 809 808 823 862
CCI ≥ 3 750 758 730 902
Chinese 570 637 611 642
Age 269 272 213 633
CCI = 0     
CCI = 1 188 201 232 247
CCI = 2 267 255 270 166
Sheltered home resident 251 208 147 110
Diabetes Mellitus with End Organ Damage 10 5 2 3
  1. ADL: Activities of Daily Living; AMI: Acute Myocardial Infarction; CCI: Charlson Comorbidity Index.