From: Effectiveness of trichloroacetic acid and trichloroacetic acid with gel foam for closure in patients with central perforation of tympanic membrane—a randomized controlled trial
Characteristics
N
%
Cause
CSOM
68
75.6
Trauma
22
24.4
Laterality
Unilateral
67
74.4
Bilateral
23
25.6
Size of perforation
Small-sized
54
60
Medium-sized
36
40