Table 2.

Predicted outcome of colonization with AHS in young children (N=1146 visits)

Parameters	OR (95% CI)	P-value
Colonization by S. pneumoniae
No (reference)	1.0
Yes	0.172 (0.125–0.238)	<0.001
Colonization by H. influenzae
No (reference)	1.0
Yes	1.254 (0.803–1.957)	0.320
Colonization by M. catarrhalis
No (reference)	1.0
Yes	1.271 (0.963–1.676)	0.090
Visit type
β AOM	1.0
Non-AOM	2.135(1.355–3.365)	0.001
Follow Up	2.122(0.966–4.665)	0.061
Presence of URI symptoms
No (reference)	1.0
Yes	1.139 (0.782–1.660)	0.498
Sex
Male	1.0
Female	1.161 (0.868–1.554)	0.313
Exposure to tobacco smoke
No (reference)	1.0
Yes	0.820 (0.533–1.263)	0.369
Age (months)	1.010 (0.990–1.032)	0.316
Breastfed
Formula(reference)	1.0
Less than 6 months	1.787 (0.992–3.219)	0.053
More than 6 months	1.164 (0.761–1.780)	0.483
Combination (Formula + Breastfeeding)	0.883 (0.631–1.237)	0.471
Daycare
Home	1.0
Center	0.817 (0.477–1.401)	0.463
Both	0.362 (0.088–1.486)	0.158
Antibiotic Exposure in the last 30 days
No (reference)	1.0
Yes	0.969 (0.533–1.761)	0.920
Family History
No (reference)	1.0
Yes	1.150 (0.862–1.535)	0.342

Associations with a significant p-value (p 0.05) are indicated in bold lettering

^βWhen the model included Non-AOM as the reference for visit type, the OR and p-value were; 0.488, p=0.002