Antibiotic failures* among children with an acute otitis media diagnosis and 1 initial dispensed antibiotic.

*Failure is defined as having an additional, different class of antibiotic prescription within 2–18 days of the index prescription.**Early failure = 2–7 days.***Late failure = 8–18 days.治疗失败定义为：在索引处方（index prescription）开具后的2至18天内，患者再次开具了类别不同的抗生素处方。早期治疗失败指失败发生于2~7天内；晚期治疗失败指失败发生于8~18天内。