Table 3 Comparison of time-dependent AUC and C-index between the nomogram and the 8th AJCC staging system.

From: Identifying the long-term survival beneficiary of preoperative radiotherapy for rectal cancer in the TME era

 

Training set

Validation set

Nomogram

8th AJCC

P-value

Nomogram

8th AJCC

P-value

1-year AUC (95% CI)

0.71 (0.65, 0.77)

0.57 (0.50, 0.64)

0.000

0.74 (0.66, 0.81)

0.58 (0.49, 0.66)

0.000

3-year AUC (95% CI)

0.71 (0.68, 0.75)

0.63 (0.59, 0.67)

0.000

0.67 (0.63, 0.71)

0.58 (0.54, 0.63)

0.000

5-year AUC (95% CI)

0.69 (0.64, 0.73)

0.61 (0.56, 0.65)

0.001

0.68 (0.63, 0.73)

0.61 (0.56, 0.66)

0.040

C-index (95% CI)

0.70 (0.67, 0.72)

0.63 (0.60, 0.67)

0.000

0.67 (0.63, 0.71)

0.61 (0.56, 0.66)

0.005

  1. AUC area under the receiver operating characteristic curve, CI confidence interval, AJCC American Joint Committee on Cancer.
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