Table 2.

Spatial and spatio-temporal models.

A. Spatial models
Zone	BYM	Besag	iid
South zone	657.24	663.98	657.22
Central zone	–	–	339.74
Eastern zone	673.24	678.88	673.23
North-East zone	298.45	308.90	298.42
North zone	497.53	507.42	497.23
West zone	428.61	440.48	428.72

B. Space–time models
Model	DIC
Model without spatial and temporal autocorrelation	235,817.60
Model with spatial and temporal autocorrelation	22,803.39
AR (1) + besag	22,804.68
AR (1) + iid	22,803.58
Model with spatial and temporal autocorrelation and Type-1 interaction	2743.68

(A) DIC of different spatial models (BYM, Besag and iid) fitted for different zones. It shows that the iid models are the best models for all zones based on the DIC values.Note: For Central zone, DIC could not be computed for Besag and BYM models and it was computed only for iid model. (B) Comparison of different spatio-temporal models with DIC. Model with spatial and temporal autocorrelation and Type-1 interaction was the best model with lowest DIC.