Demographic distribution
There are 190 cases (192 ears) of chronic suppurative otitis media with
cholesteatoma of upper tympanum, aged 6-75 years, including 92 females
and 98 males. The average age of patients in the microscopic examination
group was 45.67 years, and the average age of patients in the
microscopic examination group was 45.06 years (P=0.065).