Fig. 1.
Study flow chart showing the sample sizes used for training and testing prediction models. CV: cross-validation; PLAX: parasternal long axis; w/o: without.
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.