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Table 3 Final ordinal logistic regression model of 191 horse owners and managers perception of being not vulnerable to a future equine influenza outbreak, based on a study conducted in New South Wales, Australia in 2009

From: Perceptions of vulnerability to a future outbreak: a study of horse managers affected by the first Australian equine influenza outbreak

Parameters

b

SE(b)

Adjusted odds ratio

(95% CI)

P-valuea

Constant 1

−1.12

0.72

-

-

-

Constant 2

0.88

0.72

-

-

-

Received infection control information from a sporting/breeding association/societyb

-

-

-

-

<0.001

 

No

0

-

1

-

-

 

Yes

−1.11

0.31

0.33

(0.18, 0.61)

-

Received infection control information from a non-veterinarian horse professionalc

-

-

-

-

0.04

 

No

0

-

1

-

-

 

Yes

−0.65

0.33

0.52

(0.27, 0.99)

-

Involved in horse racing

-

-

-

-

0.006

 

No

0

-

1

-

-

 

Yes

1.54

0.55

4.67

(1.63, 13.93)

-

Geographic cluster

-

-

-

-

0.024

 

NW Sydney

0

-

1

-

-

 

Central Coast

1.01

0.56

2.74

(0.96, 7.94)

 
 

Hunter Valley

1.09

0.45

2.97

(1.22, 7.38)

 
 

Northern NSW

1.67

0.51

5.30

(1.96, 14.78)

 
 

SW Sydney

0.78

0.48

2.19

(0.84, 5.76)

 

Suspected equine influenza transmission route during the 2007 outbreak

-

-

-

-

0.035

 

Not infected

0

-

1

-

-

 

Direct or indirect transmission

−0.57

0.40

0.56

(0.26, 1.24)

-

 

Wind transmission

−0.98

0.38

0.37

(0.18, 0.78)

-

Perceived preparedness for a future equine influenza outbreak

-

-

-

-

0.023

 

Unprepared

0

-

1

-

-

 

Prepared

0.99

0.51

2.68

(1.00, 7.53)

-

 

Highly prepared

1.47

0.54

4.34

(1.52, 13.11)

-

Age

-

-

-

-

0.323

 

<35 years

0

-

1

-

-

 

35-54 years

−0.68

0.47

0.51

(0.19, 1.29)

-

 

≥55 years

−0.44

0.59

0.65

(0.20, 2.10)

-

Gender

-

-

-

-

0.864

 

Female

0

-

1

-

-

 

Male

−0.06

0.34

0.94

(0.48, 1.83)

-

  1. Log likelihood = 64.81; d.f. = 14; P < 0.001; Goodness-of-fit deviance χ2-test statistic P-value = 0.52; Score test = 0.32.
  2. aP-values based on Wald χ2-test of significance; b Sporting organisations include those relevant to horse showing, pony-club, rodeo-style, polo, equestrian and/or racing; c including farriers, dentists, chiropractors, trainers and coaches.
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BMC Veterinary Research

ISSN: 1746-6148

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