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Table 4 Risk factors for positivity to vector-borne agents and combined parameters in CVBD-suspect 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 D. immitis    
   Age > 12 months = 0.997 1.58 0.0-ND
   Outdoor or mixed lifestyle = 0.073 6.2 0.8-46.1
   Positivity to E. canis = 0.036 2.0 1.0-3.7
Positivity to E. canis    
   Age > 12 months = 0.088 3.5 0.8-15.1
   Positivity to D. immitis = 0.085 1.8 0.9-3.5
   Positivity to Anaplasma spp. < 0.001 6.1 3.5-10.9
Positivity to Anaplasma spp.    
   Non-use of ectoparasiticides = 0.011 2.2 1.2-4.2
   Positivity to E. canis < 0.001 7.4 4.0-13.5
Positivity to L. infantum    
   Age > 12 months = 0.030 2.7 1.1-7.4
Positivity to one or more agents    
   Age > 12 months < 0.001 4.2 1.9-9.3
   Outdoor or mixed lifestyle = 0.004 2.5 1.3-4.7
   Non-use of ectoparasiticides = 0.022 1.5 1.1-2.1
Positivity to mixed agents    
   Age > 12 months < 0.001 4.4 2.0-9.6
   Outdoor or mixed lifestyle = 0.003 2.4 1.4-4.3
  1. ND: not defined.