Table 2.

Incidence density rate of recurrence of acute otitis media within a one-year period following the baseline attack in 2006 (N = 283,084).

	No. of person-years	No. of recurrent episodes	Incidence density rate (per 100 person-years
Age (years)
0-2	42,776	17,627	41.2
3-5	11,2674	42,983	38.1
6-12	124,557	33,226	26.7
Gender
Male	153,014	52,577	34.4
Female	126,993	41,259	32.5
Place of treatment
Clinics	205,757	69,010	33.5
Hospital
Medical center	21,387	7,198	33.7
District hospital	33,143	10,844	32.7
Regional hospital	19,720	6,784	34.4
Specialty of attending physician
Ear, nose, and throat	90,217	30,640	34.0
Pediatrics	129,391	44,861	34.7
Family medicine	14,396	4,801	32.0
Internal medicine	3,869	1,177	30.4
Surgery	194	61	31.5
Others	41,940	12,496	29.8
Total	280,007	93,836	33.5