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Table 3 C statistics indicating the predictability of each logistic regression model

From: Comparison of different comorbidity measures for use with administrative data in predicting short- and long-term mortality

  In-hospital mortality One-year mortality
  AMI COPD AMI COPD
  c 95% CI c 95% CI c 95% CI c 95% CI
Baseline model* 0.707 (0.695-0.720) 0.697 (0.684-0.710) 0.736 (0.726-0.746) 0.670 (0.664-0.676)
Index hospitalization only         
   Baseline model + Charlson/Deyo 0.712 (0.701-0.726) 0.708 (0.697-0.723) 0.747 (0.738-0.757) 0.681 (0.675-0.687)
   Baseline model + Charlson/Romano 0.723 (0.712-0.737) 0.719 (0.707-0.733) 0.759 (0.750-0.769) 0.692 (0.687-0.698)
   Baseline model + Elixhauser 0.737 (0.729-0.753) 0.738 (0.729-0.754) 0.767 (0.760-0.778) 0.701 (0.696-0.707)
Index and prior hospitalizations         
   Baseline model + Charlson/Deyo 0.721 (0.712-0.736) 0.718 (0.707-0.733) 0.766 (0.758-0.776) 0.711 (0.705-0.716)
   Baseline model + Charlson/Romano 0.729 (0.719-0.743) 0.726 (0.714-0.740) 0.773 (0.765-0.783) 0.714 (0.708-0.719)
   Baseline model + Elixhauser 0.736 (0.729-0.752) 0.731 (0.722-0.747) 0.777 (0.770-0.787) 0.716 (0.711-0.723)
  1. AMI = acute myocardial infarction; COPD = chronic obstructive pulmonary disease.
  2. *Variables in the baseline model included age, sex, race, and whether the patient received surgery.
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