Table 3.

Results of the Spatio-temporal cluster test on HFMD incidence at county level in Hunan Province, 2009–2015

Year	Cluster type	Cluster time	Radius (km)/Counties (n)	Cluster regions	RR	LLR	P-value
2009	Most-likely	Apr 1-Jun 30	158.08 (32)	Northern	5.33	7631.47	<0.001
	Secondary	Apr 1-May 31	112.49 (33)	Central	2.57	1231.69	<0.001
2010	Most-likely	Apr 1-Jul 31	105.46 (31)	Central	5.48	29,371.10	<0.001
	Secondary	Apr 1-Jun 30	124.80 (30)	Central-southern	2.80	2746.93	<0.001
2011	Most-likely	May 1-Jul 31	96.49 (29)	Central-western	4.27	14,620.54	<0.001
	Secondary	Mar 1-Jul 31	45.44 (4)	Central	2.75	1061.01	<0.001
	Secondary	Sep 1-Dec 31	29.03 (3)	Western	2.29	354.38	<0.001
2012	Most-likely	May 31-Jun 30	111.41 (32)	Central	4.09	20,059.96	<0.001
2013	Most-likely	Apr 1-Jul 31	91.83 (23)	Central-northern	2.54	5221.37	<0.001
	Secondary	Apr 1-Jun 30	39.20 (4)	Western	5.11	1603.22	<0.001
	Secondary	Apr 1-Jun 30	131.84 (36)	South-western	1.72	1409.81	<0.001
2014	Most-likely	Apr 1-Jun 30	117.38 (30)	Central	4.40	33,910.07	<0.001
	Secondary	May 1-Jun 30	74.22 (6)	Southern	2.94	1540.24	<0.001
2015	Most-likely	May 1-Jul 31	120.81 (30)	Central	3.03	9577.40	<0.001
	Secondary	May 1-Oct 30	11.38 (2)	Central	4.04	1314.12	<0.001
	Secondary	May 1-Jun 30	170.72 (38)	Western	1.58	762.17	<0.001
	Secondary	Apr 1-Jun 30	60.65 (4)	Southern	2.38	568.19	<0.001