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Table 3 Multivariable results in the pasture models for two different leptospira strains.

From: Leptospira seroprevalence and associations between seropositivity, clinical disease and host factors in horses

  

Bratislava

Icterohaemorrhagiae

Variable

Category

est

se

OR

95% CI

est

se

OR

95% CI

Intercept

 

-3.616

0.385

-

-

-3.449

0.260

-

-

Age, continuous

 

0.048

0.016

1.0

1.0, 1.1

0.149

0.019

1.2

1.1, 1.2

Gender

Mare

0.812

0.376

2.3

1.1, 4.7

NIM

-

-

-

 

Gelding

0.679

0.378

2.0

0.9, 4.1

NIM

-

-

-

 

Stallion

0

0

1.0

-

NIM

-

-

-

Racing

Not racing

1.045

0.183

2.8

2.0, 4.1

NIM

-

-

-

 

Racing

0

0

1.0

-

NIM

-

-

-

Season

Jan-Mar

0

0

1.0

-

0

0

1.0

-

 

Apr-June

0.802

0.198

2.2

1.5, 3.3

-0.349

0.283

0.7

0.4, 1.2

 

July-Sept

0.340

0.209

1.4

0.9, 2.1

0.374

0.256

1.5

0.9, 2.4

 

Oct-Dec

0.580

0.203

1.8

1.2, 2.7

0.652

0.246

1.9

1.2, 3.1

Paddock

Yes

-0.120

0.580

0.9

0.3, 2.8

NIM

-

-

-

 

No

0

0

1.0

-

NIM

-

-

-

Riding in terrain

Yes

0.702

0.414

2.0

0.9, 4.5

NIM

-

-

-

 

No

0

0

1.0

-

NIM

-

-

-

Pasture

None

NIM

-

-

-

0

0

1.0

-

 

< 1 month

NIM

-

-

-

-1.010

0.380

0.4

0.2, 0.8

 

1 < 3 months

NIM

-

-

-

-0.239

0.212

0.8

0.5, 1.2

 

> 3 months

NIM

-

-

-

-0.965

0.260

0.4

0.2, 0.6

Interactions

         

Paddock * Gender

Paddock, mare

0.296

0.164

1.3

1.0, 1.9

NIM

-

-

-

 

Paddock, gelding

-0.490

0.620

0.6

0.2, 2.1

NIM

-

-

-

Riding in terrain * Racing

Riding in terrain, Not racing

-1.070

0.449

0.3

0.1, 0.8

NIM

-

-

-

  1. The outcome is a titre of ≥ 1:100 to the respective agents. There were 1763 observations with 304 and 150 horses with positive titres to the respective agents.
  2. NIM – not in model, est – estimate, se – standard error, OR – odds ratio, CI – confidence interval.
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Acta Veterinaria Scandinavica

ISSN: 1751-0147