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.
Box plots of audiometric thresholds. The bottom and top of each box represents the first and third quartiles, respectively. The horizontal line within each box represents the median. The lower and upper vertical lines extend to the minimum and maximum values, respectively.
