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.
Co-occurrence analysis index for the United Kingdom, showing the main categories related to hearing aids and their associations with each other (n=100).
Notes: The size of the node is proportional to frequency; the thickness of the line (and the number) indicates strength of the connection between those categories.
