Category Number Examined Negative Positive Chi-square Sig
Age          
Young 50 44 6 5.23 0.002
Adult 718 527 191    
Total 768 571 197    
Body condition          
Poor 141 79 62 35.7 0.0001
Medium 360 270 90    
Good 267 222 45    
Total 768 571 197    
Organ distribution          
Lung 768 618 150 540.3 0.0001
Liver 768 671 97 321.8 0.0001
Kidney 768 763 5 14.6 0.001
Heart 768 758 10 29.4 0.0001
Spleen 768 755 13 38.3 0.0001
Table 4: The association of hydatidosis with different predictors using Chi-square test in Kara-alo abattoir PLC, Addis Ababa.