图 2.
四种预测模型的受试者工作特征曲线
Receiver operating characteristic (ROC) curves of the 4 prediction models.
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.