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Table 5 Predictive ability and 95% confidence interval (CI) of D-Dimer tertiles on cardiovascular heart disease (CHD) and vascular dementia (VaD) risks.

From: Multiple imputation for estimating hazard ratios and predictive abilities in case-cohort surveys

   CHD   VaD
  Estimate 95% CI Estimate 95% CI
C 1 0.693 (0.622-0.764) 0.865 (0.787-0.943)
C 2 0.694 (0.621-0.767) 0.874 (0.798-0.950)
Δ 0.002 (-0.004-0.008) 0.009 (-0.011-0.029)
NRI 0.009 (-0.049-0.066) - -
IDI 0.001 (-0.001-0.003) 0.0004 (-0.0002-0.0010)
  1. C 1, Harrell's C index of the proportional hazard model without the phase-2 variable
  2. C 2, Harrell's C index of the proportional hazard model with the phase-2 variable
  3. Δ, Harrell's predictive ability of the phase-2 variable
  4. NRI, net reclassification improvement by adding the phase-2 variable IDI, integrated discrimination index by adding the phase-2 variable