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Table 4 Logistic regression analysis of risk factors for avian influenza virus in backyard poultry

From: Risk factors for avian influenza virus in backyard poultry flocks and environments in Zhejiang Province, China: a cross-sectional study

Factors P-value OR 95% CI
Types of live poultry 0.037   
 1   1  
 2 0.527 1.576 0.385–6.445
 3 0.012 9.381 1.631–53.950
Number of live poultry 0.042 3.920 1.050–14.631
Type of raising area 0.847 0.883 0.248–3.138
Type of raising 0.071 3.360 0.901–12.529
Sanitary condition of premises 0.058   
 Poor   1  
 Average 0.017 0.186 0.047–0.742
 Well 0.999 0.000
Flocks vaccination history 0.317 2.993 0.350–25.584
Sick or dead flock 0.403 0.321 0.022–4.608
Poultry source 0.671 1.598 0.184–13.879
Constant 0.159 0.004