Ear Infection and Its Associated Risk Factors in First Nations and Rural School-Aged Canadian Children

Table 3

Adjusted odds ratios (95% confidence intervals) based on multivariate logistic regression for associations with physician diagnosed ear infection.

Variable	(95% CI)
Age, in years
6–11	1.48 (1.24, 1.76)
12–17	1.00
Sex
Male	1.00 (0.84, 1.19)
Female	1.00
Obese
Yes	1.29 (0.92, 1.81)
No	1.00
Mother smoked during pregnancy
Yes	1.12 (0.91, 1.38)
No	1.00
Tonsillitis
Yes	4.48 (3.62, 5.53)
No	1.00
Any respiratory related allergy
Yes	1.27 (1.04, 1.56)
No	1.00
Asthma
Yes	1.34 (1.04, 1.73)
No	1.00
Ethnicity
First Nations/Métis	0.61 (0.48, 0.79)
Caucasian	1.00
First born in the family
Yes	1.22 (1.02, 1.46)
No	1.00
Breastfed longer than three months
Yes	0.84 (0.70, 1.00)
No	1.00