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Table 5 Ehrlichia spp. seropositivity predicted by region and age via unadjusted analysis

From: Predominant risk factors for tick-borne co-infections in hunting dogs from the USA

VariableEhrlichia spp.-positiveEhrlichia spp.-negativeUnadjusted relative risk (95% CI)P-value
Age, n (%)  0.4114 (0.196–0.920)0.0571*
 ≤ 6 years17 (9.29)166 (90.71)  
 > 6 years7 (22.58)24 (77.42)  
Sex, n (%)  1.349 (0.640–2.860)0.5185
 Male14 (12.84)95 (87.16)  
 Female10 (9.52)95 (90.48)  
Region, n (%)    
 East3 (2.88)101 (97.12) < 0.0001*
 Midwest15 (37.50)25 (62.60)  
 South5 (20.83)19 (79.17)  
 West1 (2.17)45 (97.83)  
% Exposed to B. burgdorferi8 (13.33)52 (86.67)1.283 (0.583–2.744)0.6299
% Exposed to Anaplasma spp.11 (16.67)55 (83.33)1.897 (0.905–3.920)0.1037
% Exposed to Babesia spp.13 (13.98)80 (86.02)1.538 (0.734–3.221)0.2815
  1. *Variables significantly associated with Ehrlichia spp. seropositivity at P < 0.05