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. 2018 Jul 23;39(7):894–902. doi: 10.1097/MAO.0000000000001853

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.