External Validation of the Cancer of the Prostate Risk Assessment Postsurgical Score for Prediction of Disease Recurrence after Radical Prostatectomy

Table 4

Cox proportional hazard model of biochemical recurrence using variables of CAPRA-S score.

Data	(%) BCR+/total	Hazard ratio	95% confidence interval	value
SMI+	18/38 (47.3)	1.60	1.04–2.02	0.035
SVI+	8/13 (62)	1.49	0.95–1.91	0.041
ECE+	13/41 (31.7)	1.12	0.42–1.51	0.102
LNI+	2/6 (33)	0.98	0.44–1.12	0.61

SMI+: surgical margin invasion, SVI+: seminal vesicle invasion, ECE+: extracapsular extension, LNI+: lymph node invasion, and BCR+: biochemical recurrence.