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Table 3 Confidence intervals of the C-indices for the multivariate Cox regression models predicting death by prostate cancer*

From: Comparison of digital image analysis and visual scoring of KI-67 in prostate cancer prognosis after prostatectomy

  Mean 95 % CI
C-index VS 0.850 0.728-0.959
C-index DIA 0.850 0.734-0.960
C-index H-score 0.834 0.724-0.950
  1. CI: Confidence interval; VS: visual scoring
  2. DIA: digital image analysis
  3. *The CI were constructed using the bootstrap method
  4. (300 iterations)