Table 3 NRI, IDI, C-index, and AUC of the nomogram and the AJCC 8th edition TNM-staging system in survival prediction for NM-GBA patients.

From: A novel nomogram based on log odds of positive lymph nodes to predict survival for non-metastatic gallbladder adenocarcinoma after surgery

Index

Training cohort

Validation cohort

Estimate

95% CI

P value

Estimate

95% CI

P value

NRI (vs. stage)

1-year OS

0.648

0.532–0.862

 

0.714

0.411–0.950

 

3-year OS

0.625

0.480–0.757

 

0.495

0.343–0.791

 

5-year OS

0.589

0.434–0.739

 

0.486

0.301–0.799

 

IDI (vs. stage)

1-year OS

0.073

0.058–0.088

 < 0.001

0.078

0.054–0.102

 < 0.001

3-year OS

0.102

0.072–0.132

 < 0.001

0.102

0.073–0.131

 < 0.001

5-year OS

0.099

0.081–0.117

 < 0.001

0.097

0.068–0.126

 < 0.001

C-index

Nomogram

0.730

0.708–0.752

 

0.746

0.717–0.775

 

AJCC stage

0.639

0.617–0.661

 

0.660

0.631–0.689

 

Change

0.191

0.169–0.213

 < 0.001

0.186

0.157–0.215

 < 0.001

AUC

Nomogram 1 Y

0.802

0.766–0.838

 

0.784

0.749–0.819

 

AJCC stage 1 Y

0.666

0.629–0.704

 

0.694

0.645–0.744

 

Nomogram 3 Y

0.803

0.770–0.835

 

0.784

0.751–0.817

 

AJCC stage 3 Y

0.704

0.669–0.739

 

0.741

0.690–0.792

 

Nomogram 5 Y

0.794

0.756–0.832

 

0.786

0.751–0.821

 

AJCC stage 5 Y

0.701

0.660–0.742

 

0.742

0.682–0.802

 
  1. NRI net reclassification improvement, IDI integrated discrimination improvement, CI confidence interval, OS overall survival, AJCC American Joint Committee on Cancer, AUC area under the curve, Y year.
Back to article page