Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
ROC curve for the prediction of BOO of the proposed clinical nomogram in the subcohort (180 men) for the independent split-sample validation: area under the curve = 0.809 (95% CI: 0.755–0.844, P < 0.001). The curved line is the ROC curve generated from the proposed multivariable prediction model and the diagonal line is the reference line for random guessing. ROC curve: receiver-operating characteristic curve; BOO: bladder outlet obstruction; CI: confidence interval.
