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Changes in air-bone gaps (ABGs) after tympanoplasty (A, at 1 month postoperatively; B, at 6 months postoperatively). Significant reductions in ABGs were observed in both groups, and the amount of reduction of ABGs and postoperative ABGs were not significantly different between the two groups (p = 0.455 at 1 month postoperatively; p = 0.863 at 6 months postoperatively).
