Evaluation of prediction models for the staging of prostate cancer

Table 3 Discrimination of prediction models and individual clinical variables

	Logistic regression	Random forests	K nearest neighbours	Biopsy Gleason score	PSA	Clinical stage
Sens	0.647	0.477	0.673	0.623	0.678	0
Spec	0.601	0.714	0.457	0.613	0.446	1
Youden	0.234	0.192	0.129	0.235	0.124	0
PPV	0.495	0.410	0.339	0.396	0.340	NA
NPV	0.800	0.767	0.771	0.799	0.767	NA
Brier	0.173	0.206	0.215	0.179	0.195	0.208
AUC	0.622	0.605	0.570	0.618	0.571	0.572

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