Table 2 Borrelia burgdorferi seropositivity risk factors identified through unadjusted analysis
From: Predominant risk factors for tick-borne co-infections in hunting dogs from the USA
| Variable | B. burgdorferi-positive | B. burgdorferi-negative | Relative risk (95% CI) | P-value |
|---|---|---|---|---|
| Age, n (%) | 0.9599 (0.5603–1.801) | > 0.9999 | ||
| ≤ 6 years | 51 (27.87) | 132 (72.13) | ||
| > 6 years | 9 (29.03) | 22 (70.97) | ||
| Sex, n (%) | 1.177 (0.7676–1.815) | 0.5429 | ||
| Male | 33 (30.28) | 76 (69.72) | ||
| Female | 27 (24.71) | 78 (74.29) | ||
| Region, n (%) | < 0.0001* | |||
| East | 47 (78.33) | 57 (37.01) | ||
| Midwest | 8 (13.33) | 32 (20.78) | ||
| South | 3 (5.00) | 21 (13.64) | ||
| West | 2 (3.33) | 44 (28.57) | ||
| % Exposed to Anaplasma spp. | 25 (37.88) | 41 (62.12) | 1.602 (1.041–2.421) | 0.0473* |
| % Exposed to Babesia spp. | 30 (32.26) | 63 (67.74) | 1.301 (0.8485–1.989) | 0.2826 |
| % Exposed to Ehrlichia spp. | 8 (33.33) | 16 (66.67) | 1.218 (0.6327–2.083) | 0.6299 |