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.
Specificity, as a statistical term, refers to the proportion of correctly identified negatives (for example, the percentage of healthy people who are correctly identified as not having the condition). Perfect specificity would mean the measure recognizes all actual negatives. For example, recognizes all healthy people as healthy. See Sensitivity.