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

Rows included 409
C-index 0.591 | 95% CI: 0.5117 - 0.6708 ROC
Brier score 0.124
Scaled Brier score Not specified

Classification plot

Not specified

Calibration

Regression coefficient 0.43
Intercept 0.09
Hosmer-Lemeshow GOF 0.004
 

Calibration plot

Histogram

Decision curve

Comparison
Original study population: 452
Validation study population: 430

Categorical characteristics

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

Continuous characteristics

Name Mean SD Unit Plot
Original Validation iPSA 19.136
15.038
21.2446
11.0814
ng/ml
Original Validation % positive biopsies 57.998
27.4294
%
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