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Table 1 Summary of pre and post-operative improved tympanograms based on type (A, B, or C)

From: Balloon dilation of the eustachian tube: a tympanometric outcomes analysis

Pre-op tymp Post-op tymp Proportion Percentage
B A 2/5 40 %
C A 6/20 30 %
B C 1/5 20 %
Improvement in Type 9/25 36 %
Normalization of Tympanogram 8/25 32 %