Impact of Pneumococcal Conjugate Vaccine on Pediatric Tympanostomy Tube Insertion in Partial Immunized Population

Table 1

The case number and rate of tympanostomy tube insertion in each age stratum and each calendar year.

Age	2000		2001		2002		2003		2004		2005		2006		2007		2008		2009
		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a		Rate^a
Total	1347	24.9	1406	26.5	1321	25.4	1109	21.6	1287	25.5	1389	28.3	1338	27.9	1253	26.8	1453	31.9	1171	26.5
0	106	36.2	143	58.0	116	49.0	140	64.4	121	58.5	71	36.3	86	44.6	76	39.6	115	61.3	90	49.3
1	136	48.1	153	50.0	172	66.9	168	68.2	129	56.7	107	49.0	77	37.0	82	39.7	78	38.0	60	30.2
2	76	28.4	42	14.8	59	19.2	52	20.2	50	20.3	63	27.7	42	19.2	34	16.3	60	29.0	51	24.8
3	110	34.0	117	43.7	80	28.3	59	19.3	96	37.4	117	47.5	98	43.1	97	44.4	94	45.2	68	32.9
4	199	61.6	216	66.7	190	71.0	156	55.2	202	66.0	253	98.4	218	88.5	214	94.1	230	105.3	211	101.3
5	216	66.5	234	72.4	216	66.7	166	62.0	222	78.5	237	77.3	249	96.8	247	100.2	261	114.7	203	92.8
6	178	55.1	184	56.6	165	51.1	119	36.8	163	60.9	179	63.2	174	56.8	181	70.4	200	81.1	152	66.7
7	98	30.0	95	29.4	99	30.5	77	23.9	79	24.4	95	35.5	98	34.6	80	26.1	110	42.8	97	39.4
8	62	19.3	59	18.0	64	19.8	40	12.3	63	19.5	81	25.0	71	26.6	66	23.3	71	23.2	64	24.9
9	44	13.8	47	14.6	45	13.8	45	14.0	42	12.9	59	18.3	65	20.1	43	16.1	69	24.4	44	14.4
10	32	9.5	44	13.8	22	6.9	27	8.3	40	12.4	30	9.2	47	14.6	44	13.6	49	18.3	35	12.4
11	37	11.9	23	6.9	36	11.3	16	5.0	24	7.4	41	12.7	48	14.8	34	10.5	49	15.2	22	8.2
12	21	6.1	25	8.0	27	8.1	14	4.4	16	5.0	25	7.7	33	10.2	12	3.7	26	8.1	37	11.4
13	17	5.5	8	2.3	11	3.5	12	3.6	16	5.0	13	4.1	17	5.2	15	4.7	15	4.6	14	4.3
14	7	2.3	8	2.6	7	2.1	12	3.9	10	3.0	9	2.8	4	1.2	14	4.3	12	3.7	11	3.4
15	3	0.9	5	1.7	7	2.3	3	0.9	11	3.5	4	1.2	6	1.9	6	1.9	9	2.8	4	1.2
16	5	1.4	3	0.9	5	1.7	3	1.0	3	0.9	5	1.6	5	1.5	8	2.5	5	1.6	8	2.5

Incidence rate per 100,000.