Table 3. Comparison of difference between pre-operative and post-operative values with improvement in grade of Eustachian tube function.
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.
| Type of DNS | Pre-op ETD (n=66) | Post-op ETD (n=66) | % Improvement | Chi sq | p-value | ||||
| 0/1A | 2A | 3A | 0/1A | 2A | 3A | ||||
| Type 3 | - | 11 (16.6%) | - | 11(16.6%) | - | - | 100% | NA | - |
| Type 4 | - | 08 (12.1%) | - | 08 (12.1%) | - | - | 100% | NA | - |
| Type 5 | - | 01 (1.5%) | 16 (24.2%) | 11 (16.6%) | 05 (7.5%) | 01 (1.5%) | 94.1% | Chi2: 26.902 | p < 0.001 |
| Type 6 | - | - | 21 (31.8%) | 11 (16.6%) | 10 (15.1%) | - | 100% | Chi2: 42.0 | p-value <0.001 |
| Type 7 | - | - | 04 (6.0%) | - | 02 (3.0%) | 02 (3.0%) | 50% | Chi2: 2.66 | p-value < 0.1025 |
| Type 8 | - | - | 05 (7.5%) | 02 (3.0%) | 02 (3.0%) | 01 (1.5%) | 80% | Chi2: 6.6667 | p-value < 0.0357 |