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Table 4 The clusters of mumps cases detected by using the space-time scan statistics

From: Spatial, temporal, and spatiotemporal analysis of mumps in Guangxi Province, China, 2005–2016

Cluster type Time frame Radius (km2) Cluster areas (n) Observed Expected ODE LLR RR P value
Most likely 2011/5–2012/11 140.70 14 8735 2463.95 3.55 4880.04 3.66 < 0.001
Secondary 2009/5–2011/8 89.14 15 11,050 3791.62 2.91 4691.20 3.02 < 0.001
2nd Secondary 2010/5–2012/7 66.71 8 10,862 3898.21 2.79 4286.84 2.88 < 0.001
3rd Secondary 2007/12–2009/4 21.08 3 2027 313.37 6.47 2077.72 6.52 < 0.001
4th Secondary 2010/5–2012/7 65.28 5 4178 1430.65 2.92 1748.52 2.96 < 0.001
5th Secondary 2008/5–2009/7 106.00 10 4406 1834.70 2.40 1304.78 2.43 < 0.001
6th Secondary 2011/4–2012/7 56.64 6 4359 1963.44 2.22 1094.87 2.25 < 0.001
7th Secondary 2009/3–2011/6 43.22 3 1679 562.82 2.98 721.96 3.00 < 0.001
8th Secondary 2011/12–2012/8 0.00 1 879 215.04 4.09 574.71 4.10 < 0.001
9th Secondary 2011/5–2011/7 40.27 3 759 321.71 2.36 214.66 2.36 < 0.001
  1. ODE observed/expected, LLR log likelihood ratio, RR relative risk