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Table 3 Spatio-temporal cluster results on BD incidence at county level, 2011–2019

From: Spatio-temporal analysis of bacillary dysentery in Sichuan province, China, 2011–2019

Year Cluster Cluster areas Cluster center/radius (km) Cluster time RR LLR P value
2011 Most likely cluster 34 (27.69 N, 101.38 E)/253.85 2011/4/1 to 2011/9/30 9.36 4307.35  < 0.0001
  Secondary cluster 12 (32.00 N, 101.97 E)/149.81 2011/4/1 to 2011/9/30 8.59 548.74  < 0.0001
  2nd secondary cluster 6 (30.59 N, 104.02 E)/16.86 2011/4/1 to 2011/9/30 2.59 246.70  < 0.0001
2012 Most likely cluster 42 (28.42 N, 100.85 E)/280.99 2012/4/1 to 2012/9/30 7.93 3133.91  < 0.0001
  Secondary cluster 13 (32.58 N, 102.59 E)/163.64 2012/3/1 to 2012/8/31 6.06 288.83  < 0.0001
  2nd secondary cluster 7 (30.61 N, 104.11 E)/20.15 2012/4/1 to 2012/9/30 2.36 172.56  < 0.0001
2013 Most likely cluster 55 (28.68 N, 99.34 E)/417.29 2013/3/1 to 2013/8/31 7.75 3003.06  < 0.0001
  Secondary cluster 4 (33.68 N, 102.90 E)/126.37 2013/7/1 to 2013/12/31 11.18 227.52  < 0.0001
  2nd secondary cluster 1 (30.07 N, 104.74 E)/0.00 2013/4/1 to 2013/4/30 12.49 182.34  < 0.0001
2014 Most likely cluster 55 (28.68 N, 99.34 E)/417.29 2014/4/1 to 2014/9/30 6.95 1952.17  < 0.0001
  Secondary cluster 7 (32.24 N, 103.04 E)/113.85 2014/6/1 to 2014/11/30 7.54 163.73  < 0.0001
  2nd secondary cluster 7 (30.73 N, 104.04 E)/19.23 2014/4/1 to 2014/9/30 2.14 87.08  < 0.0001
2015 Most likely cluster 54 (28.68 N, 99.34 E)/412.13 2015/4/1 to 2015/9/30 6.55 1557.76  < 0.0001
  Secondary cluster 4 (33.68 N, 102.90 E)/126.37 2015/7/1 to 2015/12/31 15.43 275.54  < 0.0001
  2nd secondary cluster 5 (29.39 N, 104.85 E)/20.85 2015/6/1 to 2015/10/31 3.28 87.18  < 0.0001
2016 Most likely cluster 54 (28.68 N, 99.34 E)/412.13 2016/4/1 to 2016/9/30 7.00 1620.57  < 0.0001
  Secondary cluster 9 (32.63 N, 103.45 E)/127.80 2016/4/1 to 2016/9/30 5.20 126.32  < 0.0001
  2nd secondary cluster 3 (29.39 N, 104.85 E)/18.29 2016/4/1 to 2016/9/30 3.86 84.39  < 0.0001
2017 Most likely cluster 55 (28.68 N, 99.34 E)/417.29 2017/4/1 to 2017/9/30 7.96 1884.31  < 0.0001
  Secondary cluster 9 (32.63 N, 103.45 E)/127.80 2017/5/1 to 2017/10/31 4.76 103.72  < 0.0001
  2nd secondary cluster 3 (29.39 N, 104.85 E)/18.29 2017/5/1 to 2017/10/31 3.16 59.54  < 0.0001
2018 Most likely cluster 54 (28.68 N, 99.34 E)/412.13 2018/3/1 to 2018/8/31 5.94 1086.65  < 0.0001
  Secondary cluster 4 (33.68 N, 102.90 E)/126.37 2018/6/1 to 2018/11/30 16.60 243.28  < 0.0001
  2nd secondary cluster 1 (30.41 N, 105.42 E)/0.00 2018/5/1 to 2018/10/31 9.04 207.74  < 0.0001
2019 Most likely cluster 24 (26.95 N, 101.97 E)/250.58 2019/5/1 to 2019/10/31 10.76 1963.02  < 0.0001
  Secondary cluster 13 (32.58 N, 102.59 E)/163.64 2019/4/1 to 2019/9/30 11.90 485.82  < 0.0001
  2nd secondary cluster 1 (30.41 N, 105.42 E)/0.00 2019/5/1 to 2019/10/31 7.62 165.76  < 0.0001