Table 2.

Risk factors for AOM. Results are expressed as mean ±s.d. for continous data, median [min; max] for discrete data and number (%) for qualitative data

	AOM(n = 25)	No AOM(n = 176)	P value
Age (months)	16.1 ± 8.1	18.0 ± 8.5	0.218
Sex M	15/25 (60.0%)	95/176 (54.0%)	0.670
URI in previous 6 months	3 [0; 7]	3 [0; 10]	0.514
AOM in previous 6 months	2 [0; 5]	3 [0; 6]	0.392
Adenoidectomy	2/24 (8.3%)	9/175 (5.1%)	0.626
Day care with other children	13/25 (52.0%)	95/176 (54.0%)	1.000
Passive smoking	4/25 (16.0%)	52/174 (29.9%)	0.233
GER	0/25 (0.0%)	17/176 (9.7%)	0.138
Breast feeding	7/25 (28.0%)	64/176 (36.4%)	0.506
Pacifier	12/25 (48.0%)	92/173 (53.2%)	0.672

URI, upper respiratory tract infection; AOM, acute otitis media; GER, gastro-esophageal reflux.