Age group | Calves 0–21 days | Calves 2–56 days | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Risk factors | Odds ratio | CI, low | CI, up | P value | P.bh | Odds ratio | CI, low | CI, up | P value | P.bh |
Intestinal parasites cows | 0.61 | 0.27 | 1.37 | 0.237 | 0.612 | 1.18 | 0.50 | 2.82 | 0.694 | 0.879 |
Intestinal parasites calves | 0.71 | 0.36 | 1.38 | 0.322 | 0.612 | 1.71 | 0.83 | 3.52 | 0.143 | 0.543 |
Dietary change | 13.27 | 2.26 | 77.93 | 0.004 | 0.039 | 1.19 | 0.31 | 4.52 | 0.793 | 0.941 |
Heat index | 1.00 | 0.96 | 1.04 | 0.866 | 0.951 | 1.00 | 0.96 | 1.05 | 0.668 | 0.879 |
Breed | 5.27 | 1.88 | 14.76 | 0.002 | 0.029 | 2.77 | 0.87 | 8.83 | 0.083 | 0.395 |
Antibiotic treatment: cows | 1.94 | 0.54 | 1.02 | 0.929 | 0.951 | 6.62 | 1.45 | 3.10 | 0.003 | 0.032 |
Other treatment: cows | 1.56 | 0.79 | 3.06 | 0.197 | 0.612 | 2.60 | 1.21 | 5.59 | 0.014 | 0.088 |
GI diseases: cows | 2.69 | 0.34 | 0.96 | 0.951 | 0.951 | 1.38 | 0.39 | 4.82 | 0.608 | 0.879 |
Mastitis | 1.09 | 0.51 | 2.29 | 0.819 | 0.951 | 3.48 | 1.52 | 7.94 | 0.003 | 0.032 |
Other diseases: cow | 7.57 | 0.38 | 1.70 | 0.486 | 0.768 | 1.16 | 0.20 | 6.69 | 0.865 | 0.966 |
Antibiotic treatment: calves | 1.03 | 0.41 | 2.54 | 0.943 | 0.951 | 1.94 | 0.72 | 5.20 | 0.188 | 0.556 |
Other treatment: calves | 1.14 | 0.50 | 2.57 | 0.745 | 0.951 | 3.98 | 0.59 | 1.54 | 0.371 | 0.767 |
GI diseases: calves | 1.76 | 0.38 | 8.08 | 0.463 | 0.768 | 0.00 | 0.00 | ∞ | 0.988 | 0.994 |
Other diseases: calves | 0.54 | 0.16 | 1.76 | 0.311 | 0.612 | 1.00 | 0.31 | 3.22 | 0.994 | 0.994 |
Meteorological season—winter vs |  |  |  | 0.089 | 0.423 |  |  |  | 0.383 | 0.767 |
Spring | 2.02 | 0.84 | 4.84 | 0.114 | 0.431 | 0.71 | 0.27 | 1.87 | 0.498 | 0.859 |
Autumn | 1.66 | 0.63 | 4.36 | 0.300 | 0.612 | 0.61 | 0.20 | 1.90 | 0.404 | 0.767 |
Summer | 3.35 | 1.22 | 9.18 | 0.018 | 0.116 | 1.27 | 0.40 | 4.02 | 0.682 | 0.879 |