Table 3 Spatial analysis scanning for clusters with high rates using the discrete Poisson model by flexible spatial scan statistic
Year | No. of clusters | Most likely cluster | ||||||
|---|---|---|---|---|---|---|---|---|
No. of villages | Maximum distance (km) | No. of cases | Expected no. of cases | RRa | LLRb | P-value | ||
2009 | 14 | 11 | 9.04 | 364 | 18.77 | 19.39 | 781.85 | < 0.001 |
2010 | 14 | 10 | 10.72 | 179 | 15.94 | 11.23 | 278.66 | < 0.001 |
2011 | 12 | 11 | 23.83 | 137 | 14.88 | 9.20 | 189.46 | < 0.001 |
2012 | 8 | 13 | 10.98 | 36 | 5.13 | 7.02 | 40.92 | < 0.001 |
2013 | 8 | 10 | 15.46 | 49 | 4.26 | 11.50 | 77.67 | < 0.001 |
2014 | 4 | 12 | 8.48 | 20 | 1.40 | 14.32 | 36.61 | < 0.001 |