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Table 2 Predictors for Mycobacterium avium subsp. paratuberculosis IS900 qPCR results on individual fecal samples ( n  = 2606)

From: Calves shedding Mycobacterium avium subspecies paratuberculosis are common on infected dairy farms

 

n (% pos) 1

OR

95% CI

P -value

Intercept

 

0.01

0.00 - 0.05

< 0.01

Pos. env. samples2

   

0.09

0

196 (1)

Reference

  

1 – 3

1,276 (10)

11.53

1.33 – 100.04

0.03

4 – 6

1,134 (7)

9.70

1.09 – 86.30

0.04

Random effects

 

Var. (SE)

 

% Var.

Herd

 

0.71 (0.33)

 

16

Pen

 

0.50 (0.22)

 

11

Animal

 

-

 

73

  1. Descriptive statistics and final multilevel logistic regression model.
  2. 1Sample size (% IS900 PCR-positive samples).
  3. 2Positive environmental samples: stratification according to the number of culture-positive environmental samples collected from adult cow housing and manure storage areas.
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Veterinary Research

ISSN: 1297-9716