Table 1 The association between brucellosis incidence and influencing factors by Poisson regression

Sheep (categorical, 1000 heads)

< 0.03

0.23 (0.03 - 0.43)

0.03 -

1.00 (0.63 - 1.36)

> 8

14.30 (9.76 - 18.84)

Sheep (continuous, 100,000 heads)

1.54 (1.48 - 1.60)

< 0.001

1.42 (1.28 - 1.57)

< 0.001

Goats (categorical, 1000 heads)

< 0.3

0.95 (0.63 - 1.27)

0.3 -

3.56 (2.38 - 4.74)

> 3

10.10 (5.87 - 14.33)

Goats (continuous, 100,000 heads)

1.41 (1.22 - 1.62)

< 0.001

1.15 (1.01 - 1.32)

0.033

Swine (categorical, 1000 heads)

< 30

7.79 (3.91 - 11.67)

30 -

4.28 (2.96 - 5.59)

> 150

1.95 (1.11 - 2.78)

Swine (continuous, 100,000 heads)

0.64 (0.48 - 0.87)

0.004

0.80 (0.66 - 0.96)

0.016

Cattle (categorical, 1000 heads)

< 3

1.23 (0.77 - 1.70)

3 -

4.82 (2.86 - 6.78)

> 30

8.49 (4.43 - 12.56)

Cattle (continuous, 100,000 heads)

1.44 (0.95 - 2.19)

0.084

0.70 (0.44 - 1.11)

0.126

Elevation (categorical, 1000 m)

< 0.4

1.59 (0.90 - 2.28)

1

-

1

-

0.4 -

4.17 (2.17 - 6.18)

2.97 (1.44 - 6.16)

0.003

3.31 (1.93 - 5.68)

< 0.001

0.8 -

17.47 (10.25 - 24.68)

10.12 (5.78 - 17.72)

< 0.001

5.77 (3.68 - 9.05)

< 0.001

> 1.6

0.78 (0.07 - 1.49)

0.70 (0.12 - 4.23)

0.701

0.44 (0.12 - 1.69)

0.234

Croplands (categorical,%)^§

< 20

7.26 (3.29 - 11.23)

20 -

3.97 (2.97 - 4.96 )

> 50

3.05 (1.85 - 4.25 )

Croplands (continuous, 10%)

1.00 (0.99 - 1.00)

0.758

Forests (categorical,%)^§

< 5

7.75 (3.70 - 11.81)

5 -

5.46 (3.98 - 6.93)

> 40

1.25 (0.75 - 1.76 )

Forests (continuous, 10%)

1.00 (0.99 - 1.00)

0.976

Grassland (categorical,%)^§

< 2

0.28 (0.20 - 0.37 )

2 -

2.09 (1.50 - 2.68 )

> 20

13.33 (8.66 - 18.01 )

Grassland (continuous, 10%)

1.03 (1.01 - 1.04)

< 0.001

1.03 (1.01 - 1.04)

< 0.001