Spatial and seasonal patterns of FMD primary outbreaks in cattle in Zimbabwe between 1931 and 2016

Table 4 FMD outbreaks among historical periods

Parameters	LRT	df	p-value
Period	13.53	3	0.00362
1931–1969			0.28
1970–1979			0.03
1980–2000			Ref.
2000–2015			0.001

Statistical model for variation among historical periods in the annual number of primary outbreaks recorded at the national scale in Zimbabwe. The 1980–2000 period characterized by the prosperity following independence is considered as the reference period for pairwise comparisons among periods. The p-values associated with comparisons of each period with the reference period are obtained though.

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