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Table 3 Univariate analysis for brucellosis at the herd level

From: Herd prevalence of bovine brucellosis and analysis of risk factors in cattle in urban and peri-urban areas of the Kampala economic zone, Uganda

Factors Infected herds Healthy herds Prevalence (%) Prevalence ratio p-value
Urbanicity      
   Urban 4 50 7.4 x2 = 0.59* 0.743
   Peri-urban 2 47 4.1 df = 2  
   Rural 5 69 6.8   
Free-grazing      
   Free-grazing 7 26 21.1 6.15 <0.001
   Restricted 4 140 2.8   
Breed      
   Improved 4 57 6.6 x2 = 0.47* 0.790
   Cross 3 61 4.7 df = 2  
   Indigenous 4 48 7.7   
Insemination      
   Bull 8 121 6.2 0.90 1
   AI 3 45 6.3   
Vaccination      
   Vaccinated 2 7 22.2 3.76 0.10
   Not vaccinated 9 159 5.4   
Abortion      
   Aborted 4 21 16.0 3.06 0.052
   Not aborted 7 145 4.6   
Bought-in cattle      
   Yes 7 119 5.6 0.61 0.716
   No 3 40 7.0   
Persistent fever      
   Exist 1 16 5.9 0.86 1
   Not exist 10 150 6.3   
  1. * Likelihood ratio test result