TABLE 5.
Change in middle ear function assessments from baseline to 12-month postprocedure in all participants who underwent balloon dilation (randomized or crossover)
| Middle Ear Assessment | Baseline | 6 Weeks Postprocedure | 3 Months | 6 Months | 12 Months |
| Tympanic membrane position | |||||
| Normal | 51.0% (26/51) | 84.6% (44/52) | 84.3% (43/51) | 82.4% (42/51) | 85.7% (42/49) |
| Retracted | 49.0% (25/51) | 15.4% (8/52) | 15.7% (8/51) | 17.6% (9/51) | 14.3% (7/49) |
| P valuea | – | <0.001 | <0.001 | <0.001 | <0.001 |
| Valsalva maneuver | |||||
| Positive | 32.7% (16/49) | 61.2% (30/49) | 63.3% (31/49) | 69.4% (34/49) | 66.0% (31/47) |
| Negative | 67.3% (33/49) | 38.8% (19/49) | 36.7% (18/49) | 30.6% (15/49) | 34.0% (16/47) |
| P valuea | – | 0.004 | 0.001 | <0.0001 | 0.001 |
| Tympanogram type (unit = ear) | |||||
| A | 71.3% (62/87) | 89.7% (78/87) | 83.1% (69/83) | 80.0% (68/85) | 87.5% (70/80) |
| B | 11.5% (10/87) | 3.4% (3/87) | 7.2% (6/83) | 8.2% (7/85) | 5.0% (4/80) |
| C | 17.2% (15/87) | 6.9% (6/87) | 9.6% (8/83) | 11.8% (10/85) | 7.5% (6/80) |
| P valueb | – | <0.001 | 0.034 | 0.139 | 0.020 |
aP values are based on McNemar's test for the change from baseline for each time period.
bP values are based on Bowker's test for the change from baseline for each time period.