Table 2.

Spatial clusters of malaria deaths in Yunnan Province, China, 2001–2010

Year	SaTScan statistics	Population	Radius of cluster (Km)	No. of counties in cluster	No. of cluster malaria deaths	Relative risk	P value
1991–1995	Most likely cluster	1,932,528	76.2	8	87	24.41	< 0.001
	Secondary cluster	5,099,408	265.5	22	40	2.33	< 0.01
1996–2000	Most likely cluster	2,173,340	107.5	9	93	30.83	< 0.001
2001–2005	Most likely cluster	5,487,146	223.4	18	126	32.06	< 0.001
2006–2010	Most likely cluster	3,641,948	127.1	11	32	23.03	< 0.001