Table 3 Univariate analysis of risk factors related to the presence of ticks and lice at the farm-level in the municipality of Santarém, Brazil
Risk factor | Ticks | Lice | ||||
|---|---|---|---|---|---|---|
Positive/total (%) | P a | OR (95% CI) | Positive/total (%) | P a | OR (95% CI) | |
Farm location | < 0.001 | 24.00 (2.91−198.10) | 0.002 | 7.66 (1.93−30.43) | ||
Dry land | 17/34 (50.0) | 17/34 (50.0) | ||||
Floodplain | 1/26 (3.85) | 3/26 (11.5) | ||||
Herd size | na | na | na | na | ||
Medium | 0/2 (0.0) | 1/2 (50.0) | ||||
Micro | 6/34 (17.6) | 6/34 (17.6) | ||||
Small | 12/24 (54.1) | 13/24 (54.1) | ||||
Animals go to floodplain area | 0.003 | 0.25 (0.03−1.64) | 0.741 | 0.72 (0.11−4.76) | ||
Yes | 15/55 (27.2) | 18/55 (32.7) | ||||
No | 3/5 (60.0) | 2/5 (40.0) | ||||
Type of pasture | 0.019 | b | 0.066 | na | ||
Cultivated | 9/19 (47.3) | 6/19 (31.5) | ||||
Mixed | 3/5 (60.0) | 4/5 (80.0) | ||||
Native | 6/36 (16.6) | 10/36 (27.7) | ||||
Type of grazing | 0.001 | c | 0.097 | na | ||
Alternating | 9/14 (64.2) | 8/14 (57.1) | ||||
Continuous | 5/42 (11.9) | 11/42 (26.1) | ||||
Rotational | 4/4 (100.0) | 1/4 (25.0) | ||||
Mixed overgrowth pastures | 0.126 | 0.27 (0.04−1.79) | 0.509 | 2.11 (0.22−20.26) | ||
Yes | 15/55 (27.7) | 19/55 (34.5) | ||||
No | 3/5 (60.0) | 1/5 (20.0) | ||||
Control ectoparasites | 0.066 | 2.41 (0.73−7.96) | < 0.001 | 11.00 (2.24−53.86) | ||
Yes | 14/36 (38.8) | 18/36 (50.0) | ||||
No | 4/24 (16.6) | 2/24 (8.3) | ||||
Presence of wild animals | 0.907 | 0.91 (0.20−4.12) | 0.443 | 0.57 (0.13−2.41) | ||
Yes | 15/51 (31.3) | 16/51 (31.3) | ||||
No | 3/9 (33.3) | 4/9 (44.4) | ||||