Table 4. Multivariable logistic regression analysis of potential risk factors for avian influenza prevalence in chickens in Dhamrai and Gazipur, Bangladesh.

Group		OR	95% CI	p value
Type	Layer	–	–	–
	Broiler	1.15	0.46-2.87	0.001
	Sonali	2	0.83-4.83	0.023
Flock size	Small (500–1,000)	–	–	–
	Medium (1,000–1,500)	1.95	0.71-5.32	0.002
	Large (>1,500)	2.6	0.95-7.11	0.041
Biosecurity	Good	–	–	–
	Moderate	1.5	0.47-4.77	0.011
	Poor	2.92	1.00-8.53	0.042

p = Probability value; 95% CI = 95% Confidence interval; OR = Odd ratio.