2.4. Statistical Analysis
We described patients’ baseline characteristics using a median and interquartile range for continuous and percentages for categorical variables. First, at the participant level, we described a proportion of patients achieving response to AMSA treatment stratified by completeness and laterality. Then, the tympanometry data were analyzed using the affected ear as a unit of analysis (not individual patients—ear-level analysis). Such an approach was adopted in several previous studies [We used two-sided 