Table 6. Results from the multivariable logistic model on risks of a household experiencing dengue fever cases.

	Odds ratio	95% confidence interval	P value*
District
Dan Phuong	Reference
Ha Dong	28.37	4.18–192.65	0.001
Livestock keeping
No	Reference
Yes	0.19	0.05–0.73	0.016
Number of correctly identified symptoms or breeding grounds
Per correct answer	1.92	1.27–2.89	0.002
Constant	0.002	0.0001–0.322	<0.001