Variables | No. examined | No. positive (%) | 95% CI for positive | χ2 | P-value |
---|---|---|---|---|---|
Slaughter location | Â | Â | Â | 4.86 | 0.028 |
 Bishoftu | 313 | 11 (3.5) | 2.3:4.7 |  |  |
 Addis Ababa | 528 | 38 (7.2) | 5.5:9.0 |  |  |
Sex | Â | Â | Â | 0.26 | 0.608 |
 Male | 373 | 20 (5.4) | 3.9:7.0 |  |  |
 Female | 468 | 29 (6.2) | 4.6:7.8 |  |  |
Age | Â | Â | Â | 18.85 | < 0.001 |
 ≤ 1year | 564 | 19 (3.4) | 2.2:4.6 |  |  |
 >1 year | 277 | 30 (10.8) | 8.7:12.9 |  |  |
Origin | Â | Â | Â | 27.67 | < 0.001 |
 Bishoftu | 501 | 16 (3.2) | 2.0:4.4 |  |  |
 Adama and Mojo | 114 | 4 (3.5) | 2.3:4.7 |  |  |
 Addis Ababa and Special Oromia Zone | 226 | 29 (12.8) | 10.5:15.1 |  |  |
Feed source | Â | Â | Â | 5.37 | 0.021 |
 Commercial mixed feed | 740 | 38 (5.1) | 3.6:6.6 |  |  |
 Grazing plus swill, offal and/or roaming | 101 | 11 (10.9) | 8.8:13.0 |  |  |
Water source | Â | Â | Â | 0.44 | 0.833 |
 River water | 21 | 1 (4.8) | 3.4:6.2 |  |  |
 Tap water | 820 | 48 (5.9) | 4.3:7.5 |  |  |
Floor type | Â | Â | Â | 0.33 | 0.565 |
 Soil | 70 | 3 (4.3) | 2.9:5.7 |  |  |
 Concrete | 771 | 46 (6.0) | 4.4:7.6 |  |  |