Table 4.

Factors associated with antibiotic prescription for acute upper respiratory infections*

Characteristics	Antibiotic prescription, n (%)	Unadjusted OR (95% CI)	Adjusted OR (95% CI)
Patient age
0–9	44 413 (50.4)	1.66 (1.64 to 1.69)	1.48 (1.46 to 1.50)
10–19	20 822 (65.1)	3.08 (3.00 to 3.15)	2.75 (2.69 to 2.82)
20–64	85 952 (54.6)	1.98 (1.95 to 2.00)	1.92 (1.89 to 1.94)
≥65	1 21 289 (37.9)	1	1
Patient sex
Male	1 12 643 (47.4)	1.13 (1.12 to 1.14)	1.10 (1.08 to 1.11)
Female	1 55 038 (44.4)	1	1
Facility scale
Free-standing clinic	2 33 078 (49.8)	4.48 (4.27 to 4.70)	4.24 (4.03 to 4.45)
Hospital (<200 beds)-based clinic	23 012 (30.8)	2.01 (1.91 to 2.11)	2.07 (1.97 to 2.18)
Hospital (200–499 beds)-based clinic	9327 (28.2)	1.77 (1.68 to 1.89)	1.71 (1.62 to 1.80)
Hospital (≥500 beds)-based clinic	2064 (18.2)	1	1

*Acute upper respiratory infections include viral upper respiratory infections, pharyngitis, bronchitis and sinusitis.