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Table 2 Assessment of temporal trends of anthrax events using Poisson mixed-effects regression model with calendar month as fixed effect across years

From: Spatial clustering of livestock Anthrax events associated with agro-ecological zones in Kenya, 1957–2017

Variable

Variable category

Coefficient

95% confidence interval

P value

Month

January

Reference

  

February

1.04

[0.70, 1.63]

0.43

March

1.11

[0.77, 1.65]

0.55

April

1.05

[0.72, 1.55]

0.76

May

1.09

[0.76, 1.62]

0.62

June

1.05

[0.72, 1.55]

0.76

July

1.13

[0.79, 1.67]

0.49

August

0.61

[0.39, 0.97]

0.03

September

0.88

[0.58, 1.31]

0.53

October

1.32

[0.50, 1.15]

0.19

November

1.11

[0.77, 1.65]

0.55

December

0.66

[1.65, 1.01]

0.06

Random effects County identification:

Standard deviation =1.57

 

  1. Likelihood ratio test versus Poisson regression chibar2(01) = 1441.2; Prob> = chibar2 = 0.0000