Table 2.

Factors associated with antibiotic prescription: visits for common respiratory infections. Univariate and multivariate analysis

Variable	N* of children	Antibiotic prescriptions %	OR (95% CI)	Adjusted OR (95% CI)
Child's age
≤2 years	1370	33%	1	1
>2 years	2943	40%	1.35 (1.18 - 1.55) *	0.98 (0.80 - 1.19)
Parent born abroad
No	625	37%	1	1
Yes	3653	45%	1.37 (1.16 - 1.63)*	1.71 (1.36 - 2.15) *
Day care attendance
No	1461	34%	1	1
Yes	2683	39%	1.27 (1.11 - 1.45)*	1.12 (0.93 - 1.35)
Was the parent expecting an antibiotic prescription?
No	2524	19%	1	1
Yes	1050	77%	14.21 (11.94 - 16.91)*	12.83 (10.43 - 15.79)*
Don't know	712	49%	4.15 (3.48 - 4.96)*	3.48 (2.82 - 4.30) *
Exudate or tonsillar hyperemia
No	2077	31%	1	1
Yes	2275	44%	1.70 (1.50 - 1.93)*	1.63 (1.36 - 1.96) *
Facial pain
No	4284	37%	1	1
Yes	68	71%	4.03 (2.39 - 6.82)*	4.85 (2.25 - 10.46) *
Otalgia
No	3505	33%	1	1
Yes	847	60%	2.79 (2.39 - 3.25)*	2.02 (1.60 - 2.55) *
Periorbital edema
No	4284	38%	1	1
Yes	68	47%	1.47 (0.91 - 2.38)	1.67 (0.89 - 3.14)
Diarrhoea
No	4224	38%	1	1
Yes	128	24%	0.52 (0.34 - 0.78)*	0.55 (0.32 - 0.93) *
Cervical adenopathy
No	3457	33%	1	1
Yes	895	57%	2.67 (2.30 - 3.11)*	2.09 (1.70 - 2.59) *
Bulging tympanic membrane
No	3959	34%	1	1
Yes	393	78%	6.77 (5.29 - 8.65)*	5.68 (4.06 - 7.94) *
Otorrhea
No	4281	37%	1	1
Yes	71	96%	(12.20 - 123.60)*	28.06 (6.32 - 124.51)*
Rhinorrhea
No	2.521	40%	1	1
Yes	1.831	35%	0.83 (0.73 - 0.94)*	0.72 (0.61 - 0.86) *
Fever
≤38°C	2713	29%	1	1
>38°C	1639	53%	2.86 (2.52 - 3.25) *	2.34 (1.97 - 2.79) *
Associated chronic diseases
No	4135	38%	1	1
Yes	217	44%	1.30 (0.98 - 1.71)	1.29 (0.88 - 1.88)
Physician age**				1.02 (0.95-1.10)

* statistically significant p < 0.05

**OR for 5 years of age increase