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Table 1 Mean within-farm seroprevalence of Toxoplasma gondii in dairy sheep flocks and bivariable association with potential risk factors

From: Seroprevalence and risk factors for Toxoplasma gondii in sheep in Grosseto district, Tuscany, Italy

Variable Level Number of farms Mean seroprevalence(%) P-value*
Size of flock <300 14 42.4 <0.001
  300-400 10 33.5  
  >400 9 24.0  
Production system Extensive 30 35.9 0.088
  Intensive 3 22.6  
Stagnant water used No 21 31.3 0.05
  Yes 12 40.7  
Separate water trough for young and adult animals No 29 33.7 0.587
  Yes 4 42.2  
Separate feed troughs for young and adult animals No 10 31.3 0.948
  Yes 23 36.18  
Purchased breeding animals in last 5 years No 3 22.7 0.481
  Yes 30 35.9  
Resident cats present on farm No 10 28.4 0.122
  Yes 23 37.4  
Stray cats occur on farm No 0
  Yes 33 34.7  
Access of stray cats to animal feed No 7 32.4 0.715
  Yes 26 35.3  
Access of stray cats to animals’ water No 12 22.9 0.001
  Yes 21 41.4  
  1. * From Poisson regression model with number tested as offset.