Table 1. Characteristics of children aged 3 months to 12 years with a diagnosis of otitis media, 2000–2011.

	Acute Otitis Media				Otitis Media with Effusion
	Antibiotics		No Antibiotics		Antibiotics		No Antibiotics
	N = 2,784,108		N = 1,845,352		N = 382,844		N = 523,618
	N	%	N	%	N	%	N	%
Mean age	3.8	3.52	3.9	3.53	4.1	3.6	4.4	3.5
(Std), years
Male sex	1,434,900	51.5	956,916	51.9	197,146	51.5	280,059	53.5
Region
Northeast	350,074	12.6	244,862	13.3	49,556	12.9	84,644	16.2
North central	737,316	26.5	492,061	26.7	92,455	24.2	131,932	25.2
South	1,157,846	41.6	810,230	43.9	173,537	45.3	226,192	43.2
West	504,608	18.1	261,696	14.2	62,990	16.5	71,919	13.7
Unknown	34,264	1.2	36,503	2.0	4,306	1.1	8.931	1.7