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Table 3 Risk factors for E. canis, Anaplasma spp. and one or more agents in apparently healthy dogs

From: Prevalence of Dirofilaria immitis, Ehrlichia canis, Borrelia burgdorferi sensu lato, Anaplasma spp. and Leishmania infantum in apparently healthy and CVBD-suspect dogs in Portugal - a national serological study

Dependent variable/
/risk factor
p value OR 95% CI
Positivity to E. canis    
   Positivity to Anaplasma spp. < 0.001 20.8 7.9-55.1
Positivity to Anaplasma spp.    
   Detectable ticks = 0.185 2.7 0.6-11.4
   Non-use of ectoparasiticides = 0.079 2.3 0.9-5.7
   Positivity to E. canis < 0.001 20.7 7.4-58.1
Positivity to one or more agents    
   Age > 12 months = 0.040 3.5 1.1-11.5
   Non-use of ectoparasiticides = 0.004 2.1 1.3-3.4