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Table 1 Spatial irregular clusters of annual measles incidence between 2004 and 2014

From: Spatial, temporal and spatio-temporal clusters of measles incidence at the county level in Guangxi, China during 2004–2014: flexibly shaped scan statistics

Year Type of cluster No. of counties in cluster Radius (km) LLR RR P-value*
2004 Most likely cluster 2 39.17 114.21 7.12 0.001
Secondary cluster 1 8 164.99 104.56 2.76 0.001
Secondary cluster 2 6 187.76 38.18 2.06 0.001
Secondary cluster 3 4 113.48 26.68 1.75 0.001
Secondary cluster 4 3 81.03 24.37 2.66 0.001
2005 Most likely cluster 4 26.18 381.42 7.24 0.001
Secondary cluster 1 4 117.62 355.75 6.41 0.001
Secondary cluster 2 1 0.00a 85.96 5.30 0.001
Secondary cluster 3 2 61.69 35.73 2.38 0.001
Secondary cluster 4 2 64.71 28.58 2.88 0.001
Secondary cluster 5 2 53.88 9.99 2.56 0.033
2006 Most likely cluster 6 100.54 191.49 7.03 0.001
Secondary cluster 1 6 132.81 137.54 3.99 0.001
Secondary cluster 2 2 12.85 91.45 8.48 0.001
Secondary cluster 3 5 179.29 11.43 1.93 0.005
2007 Most likely cluster 1 0.00a 1107.94 33.01 0.001
Secondary cluster 1 3 87.64 25.58 2.91 0.001
Secondary cluster 2 2 32.53 23.32 2.60 0.001
Secondary cluster 3 1 0.00a 22.49 2.64 0.001
Secondary cluster 4 4 14.26 9.88 2.27 0.046
2008 Most likely cluster 4 59.44 207.67 5.14 0.001
Secondary cluster 1 4 14.26 96.97 5.97 0.001
Secondary cluster 2 1 0.00a 87.52 4.93 0.001
Secondary cluster 3 4 153.81 19.88 2.52 0.001
Secondary cluster 4 1 0.00a 12.49 2.56 0.002
Secondary cluster 5 1 0.00a 10.57 4.64 0.018
Secondary cluster 6 1 0.00a 9.62 4.93 0.050
2009 Most likely cluster 1 0.00a 66.28 33.23 0.001
Secondary cluster 1 5 136.07 20.64 4.62 0.001
2010 Most likely cluster 1 0.00a 15.51 53.67 0.002
2011 Most likely cluster 6 92.81 28.95 18.03 0.001
2012 Most likely cluster 1 0.00a 42.68 56.51 0.001
2013 Most likely cluster 1 0.00a 1924.26 81.45 0.001
Secondary cluster 1 8 205.23 163.35 4.14 0.001
Secondary cluster 2 2 49.60 18.22 2.48 0.001
Secondary cluster 3 1 0.00a 13.63 2.07 0.001
2014 Most likely cluster 8 127.25 2006.30 5.88 0.001
Secondary cluster 1 3 71.96 431.92 7.04 0.001
Secondary cluster 2 5 153.81 24.99 1.88 0.001
  1. *Tango’s flexible scan statistics
  2. aZero-radius means only one county in the cluster