Table 4.
Tympanometry for 193 ears, 97 participants.
| Tympanogram classification | All ages (97 participants, 193 ears) | Age groups |
|||
|---|---|---|---|---|---|
| 1–5 years (33 participants, 66 ears) | 6–10 years (28 participants, 56 ears) | 11–20 years (26 participants, 51 ears) | 21–49 years (10 participants, 20 ears) | ||
| Normal | 74 (38.3) | 16 (24.2) | 17 (30.4) | 31 (60.8) | 10 (50) |
| Immobile (flat) | |||||
| Tubes | 29 (15.2) | 16 (24.2) | 12 (21.4) | 0 | 1 (5) |
| Perforation | 8 (4.1) | 3 (4.5) | 2 (3.6) | 3 (5.9) | 0 |
| Effusion | 47 (24.4) | 22 (33.3) | 16 (28.6) | 6 (11.8) | 3 (15) |
| ETD | 24 (12.4) | 7 (10.6) | 7 (12.5) | 7 (13.7) | 3 (15) |
| Hypermobile | 3 (1.6) | 0 | 2 (3.6) | 1 (1.9) | 0 |
| Hypomobile | 8 (4.1) | 2 (3) | 0 | 3 (5.9) | 3 (15) |
Note. ETD = Eustachian tube dysfunction.