Volume 15, Number 12—December 2009
Risk for Infection with Highly Pathogenic Avian Influenza Virus (H5N1) in Backyard Chickens, Bangladesh
|Risk factor||Odds ratio||95% Confidence interval||p value|
|Nearby (<0.1 km) body of water||5.27||(1.24–22.34)||0.024|
|Contact with pigeons||4.47||(1.14–17.50)||0.032|
|Chickens and ducks in different night shelters||0.06||(0.01–0.45)||0.006|
|Offering slaughter remnants of purchased chickens†||13.29||(1.34–131.99)||0.027|
*Conditional logistic regression; final model with 4 variables entered; χ2 for likelihood ratio test = 38.82; p>0.001; no. observations = 100.
†Within 21 days of the onset clinical signs in case backyard farms.