Table 1 Negative binomial regression models for rainfall, previous chicken seroconversion and season by rainfall district

Rain_1

NS

-

-

-

NS

-

-

-

NS

-

-

-

NS

-

-

-

<0.001

1.075

1.035

1.116

Rain_2

<0.001

1.047

1.023

1.071

.001

1.051

1.019

1.084

.001

1.041

1.016

1.066

<0.001

1.100

1.060

1.141

<0.001

1.093

1.049

1.139

Rain_3

.014

1.028

1.006

1.051

.003

1.052

1.017

1.088

.006

1.047

1.013

1.081

<0.001

1.113

1.063

1.165

Chick_1

.042

1.028

1.001

1.056

<0.001

1.043

1.024

1.063

<0.001

1.065

1.042

1.088

<0.001

1.060

1.032

1.089

<0.001

1.048

1.020

1.076

Summer

.143

2.655

.718

9.813

.013

13.466

1.750

103.634

.002

5.617

1.855

17.012

.780

.880

.358

2.161

-

-

-

-

Autumn

.364

2.003

.446

8.985

.074

7.103

.828

60.915

<0.001

13.322

4.245

41.807

.008

3.134

1.349

7.283

-

-

-

-

Winter

.029

4.316

1.163

16.023

.253

3.499

.409

29.944

.001

6.913

2.258

21.171

.029

2.487

1.098

5.632

-

-

-

-

Spring (ref)

.

1

.

.

.

1

.

.

.

1

.

.

.

1

.

.

-

-

-

-