Table 2 Risk factors associated with new brucellosis infections in cattle farms compared with farms that remained brucellosis-free for at least three years based on multiple logistic regression model
From: Risk factors for new bovine brucellosis infections in Colombian herds
Variables | B (SE) | OR | 95% CI OR | p-value |
|---|---|---|---|---|
(Intercept) | −0.35 (0.26) | 0.71 | (0.43; 1.18) | 0.184 |
Brucellosis-free farms or internal replacement | 1 | |||
Replacement from farms with unknown/positive brucellosis status | 1.58 (0.47) | 4.84 | (1.92; 12.20) | < 0.001 |
Type: Dairy | 1 | |||
Type: Beef | 1.28 (0.54) | 3.61 | (1.26; 10.35) | 0.017 |
Type: Dual purpose (beef and milk) | 0.18 (0.47) | 1.20 | (0.48; 2.99) | 0.696 |
Artificial insemination | 1 | |||
Brucella-free status of the origin of the bulls | −1.21 (0.42) | 0.30 | (0.13; 0.69) | 0.004 |
Positive/unknown Brucella status of the origin of the bulls | 0.90 (0.43) | 2.45 | (1.06; 5.68) | 0.037 |