The Arnhem Pre-Prostatectomy Lymph Node Involvement Calculator: Validation on Rotterdam data - including DCA
Robot Prostatectomy Predictors: Oncology // Pre-Prostatectomy Lymph Node Involvement Calculator // Arnhem Validation on Rotterdam data
Research authors: Eelco Collette
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Discrimination

Rows included 477
C-index 0.608 | 95% CI: 0.5466 - 0.6694 ROC
Brier score 0.175
Scaled Brier score Not specified

Classification plot

Not specified

Calibration

Regression coefficient 1.186
Intercept 0.06
Hosmer-Lemeshow GOF < 0.001
 

Calibration plot

Histogram

Decision curve

Comparison
Original study population: 430
Validation study population: 484

Categorical characteristics

Name Subset / Group Nr. of patients Validation P-Value
Clinical Tumor Stage cT1abc 116 185 Not available
cT2abc 232 251
cT3ab 63 48
Biopsy Gleason Grade Group 1 67 43 Not available
2 91 120
3 103 111
4 108 128
5 53 82

Continuous characteristics

Name Mean SD Unit Plot
Original Validation iPSA 15.038
19.136
11.0814
21.2446
ng/ml
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