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Table 6 Association between Brucella seropositivity and reproductive performance of cattle in the study area assessed by logistic regression

From: Seroprevalence of bovine brucellosis and associated risk factors in and around Alage district, Ethiopia

Factors

Level

n

Test +ve

%

OR

95 % CI

Z-test

P value

NSPC

1a

262

2

0.8

    

2

82

5

6

8.3974

41.96–46.23

2.5147

0.011

≥3

29

10

34.5

62.053

303.4–311.55

5.0546

0.000

Calving interval

1 ≤ 2 yearsa

218

4

1.8

    

1 years

48

1

2.1

8.609

0.005–0.351

3.0178

0.003

>2 years

33

11

33.3

27.622

0.011–0.127

84.683

0.000

Reproductive status

Heifera

85

1

1.2

    

Lactating

140

2

1.4

0.821

0.073–9.20

 

0.87

Dry

107

4

3.7

2.68

0.481–9.91

1.8413

0.26

Pregnant

148

11

7.4

5.54

1.21–25.46

−1.996

0.028

  1. aOthers were computed in reference to this category