Table 3. Significant high rates of temporal clusters of malaria in northwest Ethiopia between 2003 and 2012.

Cluster	Districts	Time Frame	Observed Cases	Expected Cases	RR	LLR	P value
1	All	2009/1/1 to 2010/12/31	648645	414844.9	1.80	72490.5	0.001
2	All	2003/1/1 to 2005/12/31	730456	589405.7	1.46	26988.7	0.001
3	All	2007/1/1 to 2011/12/31	576471	456168.6	1.99	39838.1	0.001

RR=Relative risk; LLR=Log likelihood ratio