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.
Summary receiver operating characteristic (ROC) plot of sensitivity and specificity: abdominal studies (n = 27; indicated in black) versus thoracic studies (n = 4; indicated in red). The solid circles represent the summary estimates of sensitivity and specificity. The summary estimates are surrounded by a dotted line representing the 95% confidence region and a dashed lined representing the 95% prediction region.
