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.
Changes in hearing levels in patients with an attic cholesteatoma
The average air-bone gap improved postoperatively. The bone conduction level was unchanged after surgery in all the patients. *P<0.05.
AB gap: air-bone gap (0.5, 1, 2, and 3 kHz); BC: bone conduction (1, 2, and 4 kHz).
