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Table 3 Prevalence of bTB at different times and in different sized farms

From: Evaluation and application of a milk antibody ELISA for assessing the prevalence and incidence of bovine tuberculosis in dairy herds in Hubei Province, China

  

Number of positive samples

Total

Prevalence (%)

(95% CI)

OR

(95% CI)

p value*

Month

Jan-2018

80

1196

6.7 (5.3, 8.3)

1.1 (0.8, 1.6)

0.47

 

Apr-2018

79

1319

6.0 (4.8, 7.4)

1.0

 
 

Jul-2018

50

622

8.0 (6.0, 10.5)

1.4 (0.9, 2.0)

0.09

 

Mar-2019

70

711

9.8 (7.8, 12.3)

1.7 (1.2, 2.4)

0.002

 

Jun-2019

68

547

12.4 (9.8, 15.5)

2.2 (1.6, 3.1)

 < 0.0001

Year

Year-2018

209

3137

6.7 (5.8, 7.6)

0. 6 (0.5, 0.7)

 < 0.0001

 

Year-2019

138

1258

11.0 (9.3, 12.8)

1.0

 

Scale

L

81

1885

4.3 (3.4, 5.3)

0.4 (0.3, 0.5)

 < 0.0001

 

S

266

2510

10.6 (9.4, 11.9)

1

 
  1. L, farms had > 1000 lactation cows; S, farms had ≤ 1000 lactation cows
  2. *p < 0.05 present significant difference