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Table 4 Mean (95% confidence interval) performance of model in the internal and temporal validation cohort

From: A preoperative prediction model based on Lymphocyte-C-reactive protein ratio predicts postoperative anastomotic leakage in patients with colorectal carcinoma: a retrospective study

Statistic

Internal validation

Temporal validation

D statistic*

0.111 (0.110-0.113)

0.024 (0.022-0.026)

Harrell's C*

0.851 (0.803-0.965)

0.777 (0.823-0.979)

R2(%)†

0.302 (0.298-0.306)

0.159 (0.155-0.162)

Brier‡

0.049 (0.047-0.051)

0.096 (0.094-0.098)

  1. *A measure of discrimination. Higher values indicate better discrimination
  2. †Measures explained the degree of fit between the cohort and the fitted model. Higher values indicate better fit
  3. ‡A measure of calibration. Lower values indicate better calibration
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BMC Surgery

ISSN: 1471-2482

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