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

Table 2 Length of follow-up (person-time) and incidence rates by type of acute otitis media and age group

	0-1 year	1-2 years	2-3 years	3-4 years	4-5 years	5-6 years	Total
No. of children followed up	69289	40106	41332	41683	41575	39921	92373
Person time (years)	33241.9	37248.0	38950.5	39798.1	40151.6	37970.9	227361.0
Total AOM
No. of children	3807	5673	5107	6991	5448	3935	21947
No. of episodes	4709	7212	6180	8848	6664	4628	38241
Incidence rate*	14.2 (13.8-14.6)	19.4 (18.9-19.8)	15.9 (15.5-16.3)	22.2 (21.8-22.7)	16.6 (16.2-17.0)	12.2 (11.8-12.5)	16.8 (16.7-17.0)
Single AOM
No. of children	3796	5576	5024	6915	5330	3855	21866
No. of episodes	4550	6703	5858	8376	6285	4408	36180
Incidence rate*	13.7 (13.3-14.1)	18.0 (17.6-18.4)	15.0 (14.7-15.4)	21.0 (20.6-21.5)	15.7 (15.3-16.0)	11.6 (11.3-12.0)	15.9 (15.7-16.1)
Recurrent AOM
No. of children	118	333	216	347	272	171	1173
No. of episodes	159	509	322	472	379	220	2061
Incidence rate*	0.5 (0.4-0.6)	1.4 (1.3-1.5)	0.8 (0.7-0.9)	1.2 (1.1-1.3)	0.9 (0.9-1.0)	0.6 (0.5-0.7)	0.9 (0.9-0.9)

ISSN: 1471-2431