Table 3 Spatiotemporal clusters by Poisson scan statistic model on FMD outbreaks in cattle farms in Chiang Mai and Lamphun, Thailand 2015–2016
Cluster number | Cluster type | Cluster time | Centroid(X,Y)/ Radius (km) | Number of cases | Number of expected cases | Observed to expected cases | Relative risk | Log likelihood ratio | p-value |
|---|---|---|---|---|---|---|---|---|---|
2015 | |||||||||
1 | Most likely | 4 Sep-1 Oct | 18.770903 N, 99.248754 E/21.31 | 504 | 105.86 | 4.76 | 6.57 | 449.07 | < 0.001 |
2016 | |||||||||
1 | Most likely | 6 Feb-17 Sep | 19.046783 N, 9 8.985592 E/42.95 | 1414 | 543.86 | 2.60 | 4.22 | 674.43 | < 0.001 |
2 | Secondary | 31 Jul-8 Aug | 18.486710 N, 98.909121 E/15.80 | 176 | 44.44 | 3.96 | 4.61 | 113.85 | < 0.001 |
3 | Secondary | 31 Jan-27 Feb | 18.608944 N, 99.274140 E/4.44 | 179 | 64.71 | 2.77 | 2.86 | 70.25 | < 0.001 |