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Table 1 Univariate analysis of potential risk factors associated with the presence of gross TB lesions in slaughter pigs

From: Prevalence of tuberculosis in pigs slaughtered at two abattoirs in Ethiopia and molecular characterization of Mycobacterium tuberculosisisolated from tuberculous-like lesions in pigs

Variables No. examined No. positive (%) 95% CI for positive χ2 P-value
Slaughter location     4.86 0.028
 Bishoftu 313 11 (3.5) 2.3:4.7   
 Addis Ababa 528 38 (7.2) 5.5:9.0   
Sex     0.26 0.608
 Male 373 20 (5.4) 3.9:7.0   
 Female 468 29 (6.2) 4.6:7.8   
Age     18.85 < 0.001
 ≤ 1year 564 19 (3.4) 2.2:4.6   
 >1 year 277 30 (10.8) 8.7:12.9   
Origin     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     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     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     0.33 0.565
 Soil 70 3 (4.3) 2.9:5.7   
 Concrete 771 46 (6.0) 4.4:7.6   
  1. No. examined: the number of pigs examined for gross TB lesion/s.
  2. No. positive: the number of carcass with gross TB lesion/s.