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Table 3 Anaplasma spp. seropositivity predicted by sex, region, Borrelia burgdorferi and Babesia spp. co-exposures through univariate analysis

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

VariableAnaplasma spp.-positiveAnaplasma spp.-negativeRelative risk (95% CI)P-value
Age, n (%)  0.847 (0.529–1.482)0.5353
 ≤ 6 years55 (30.05)128 (69.95)  
 > 6 years11 (35.48)20 (64.52)  
Sex, n (%)  1.58 (1.047–2.411)0.0379*
 Male41 (37.61)68 (62.39)  
 Female25 (23.81)80 (76.19)  
Region, n (%)   0.0048*
 East43 (41.35)61 (58.65)  
 Midwest12 (30.00)28 (70.00)  
 South4 (16.67)20 (83.33)  
 West7 (15.22)39 (84.78)  
% Exposed to B. burgdorferi25 (41.67)35 (58.33)1.565 (1.039–2.301)0.0473*
% Exposed to Babesia spp.39 (41.94)54 (58.06)1.879 (1.254–2.834)0.0027*
% Exposed to Ehrlichia spp.11 (45.83)13 (54.17)1.583 (0.9239–2.433)0.1037
  1. *Variables significantly associated with Anaplasma spp. seropositivity at P < 0.05