 Sample Size: A logistic regression will be performed using antibiotic use in 7 days as the dependent variable. Given 4 independent variables, the investigators need at least 40 80 would be ideal subjects who fill the antibiotic prescription. Enrolling 137 patients would give us an alpha and Beta each of 0.05, and would allow us to do Chi Squared test looking at a two by two table of Antibiotic Yes or No vs Tympanometry Graph Type B vs other. 