Table 2: Variables measured in the study of cross section for T. gondii in fattening pigs from 39 farms in the state of Yucatan, Mexico.

VariableCategoryPositiveNegativeChi2 value

Farm size≤4002723450.0001
>40012529
Presence of catsYes3012940.055
No963
Cats number>31762270.026
<31367
0853
Food storageEnsilage3113340.001
Warehouse36619
Type of feederAutomatic751390.003
Manual32219
CannibalismYes1550190.0001
No24232
Production systemFull cycle3093290.0028
Fattening880
Presence of rodents Yes95147280.000
No12265
Pest controlYes1091080.190.65
No 111101