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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.