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Table 1 Incidence rates of acute otitis media by year and type of episode

From: Burden of acute otitis media in primary care pediatrics in Italy: a secondary data analysis from the Pedianet database

  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       
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       
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       
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)
  1. * Incidence rate (per 100 PY, 95% CI).