Table 1 Incidence rates of acute otitis media by year and type of episode
| Â | 2003 | 2004 | 2005 | 2006 | 2007 | Total |
|---|---|---|---|---|---|---|
No. of children followed up | 49782 | 53152 | 58426 | 57092 | 55454 | 92373 |
Person time (years) | 41251.3 | 43459.5 | 48314.8 | 47956.7 | 46378.7 | 227361.0 |
Total AOM | Â | Â | Â | Â | Â | Â |
No. of children | 6614 | 5928 | 6243 | 6490 | 6346 | 23039 |
No. of episodes | 8138 | 7173 | 7496 | 7815 | 7619 | 38241 |
Incidence rate* | 19.7 (19.3-20.2) | 16.5 (16.1-16.9) | 15.5 (15.2-15.9) | 16.3 (15.9-16.7) | 16.4 (16.1-16.8) | 16.8 (16.7-16.9) |
Single AOM | Â | Â | Â | Â | Â | Â |
No. of children | 6438 | 5648 | 5951 | 6142 | 6023 | 21866 |
No. of episodes | 7910 | 6729 | 7084 | 7293 | 7164 | 36180 |
Incidence rate* | 19.2 (18.8-19.6) | 15.5 (15.1-15.9) | 14.7 (14.3-15.0) | 15.2 (14.9-15.6) | 15.4 (15.1-15.8) | 15.9 (15.7-16.1) |
Recurrent AOM | Â | Â | Â | Â | Â | Â |
No. of children | 176 | 280 | 292 | 348 | 323 | 1173 |
No. of episodes | 228 | 444 | 412 | 522 | 455 | 2061 |
Incidence rate* | 0.6 (0.5-0.6) | 1.0 (0.9-1.1) | 0.9 (0.8-0.9) | 1.1 (1.0-1.2) | 1.0 (0.9-1.1) | 0.9 (0.9-0.9) |