Table 1.
Sensitivity and Specificity of US Interpretations by the Four Observers
Note.-PPV = positive predictive value, NPV = negative predictive value
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.