DNS: Deviated nasal septum, ETD: Eustachian tube dysfunction, Chi2: Chi-square, Pre-op: Pre-operative, Post-op: Post-operative.
Eustachian tube function: Grades zero and 1A were considered normal functions; 2A: mechanical dysfunction, edema, and congestion at the lumen; the lumen opens partly on swallowing; 3A: mechanical dysfunction; the tubal lumen fails to open with swallowing due to gross edema.
In this table, a chi-square test was used, and the association in types 5, 6, and 8 was of statistical significance with p-values < 0.001, < 0.001, and 0.0357, respectively.