Figure 4.
Calibration plots of the nomogram. The shadow line represents the perfect prediction of an ideal model, and the dashed lines represent the performance of the derivation cohort (a) and the validation cohort (b).
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.