Table 4.

Identification of factors associated with the antibiotic knowledge score by linear regression analysis in a sample of 156 dairy farmers in Cajamarca, Peru

	Univariate analysis			Multivariate analysis
	Coefficient	p-value	95% CI	Coefficient	p-value	95% CI
Farmer buys antibiotics from feed-store	0.98	<0.001	0.440–1.52	0.65	0.009	0.165–1.13
Antibiotics used for preventative reasons	0.79	0.014	0.166–1.42	0.67	0.019	0.110–1.22
In response to treatment failure, the farmer increases the dose	0.86	0.026	0.103–1.61	0.77	0.027	0.087–1.45
Farmer has observed complications in animals administered antibiotics	1.29	<0.001	0.726–1.86	0.65	0.019	0.106–1.19
Education (compared to none)
Some primary	0.84	0.003	0.281–1.40	0.61	0.017	0.109–1.10
Some secondary	1.50	0.002	0.563–2.45	1.07	0.011	0.248–1.90
Number of workers on the farm	0.46	<0.001	0.216–0.716	0.29	0.01	0.073–0.517