Table 4. Purely spatial scan statistics of the most likely cluster and secondary clusters of malaria episodes at the village level, southern-central Ethiopia, October 2014 to January 2017.

Cluster	# villages	Coordinates	Radius (km)	Pop.	# episodes	Expected cases	Annual episodes per 1000	RR	LLR	P-value
All malaria types*
Most likely	17	8.012083 N, 38.716507 E	2.03	3605	346	123.44	41.05	3.55	159.3	<0.001
Secondary	19	7.858422 N, 38.741448 E	2.69	3055	246	104.60	34.30	2.69	77.7	<0.001
Secondary	4	7.902991 N, 38.697144 E	1.16	568	58	19.46	43.67	3.08	25.5	<0.001
Plasmodium falciparum
Most likely	5	8.022632 N, 38.716322 E	0.95	927	126	17.49	58.13	8.69	150.1	<0.001
Secondary	11	7.863378 N, 38.737913 E	0.73	1637	103	30.89	26.91	3.77	56.28	<0.001
Secondary	6	7.920306 N, 38.692410 E	1.83	971	49	18.32	21.58	2.81	18.28	<0.001
Secondary	2	8.027165 N, 38.691838 E	1.28	246	17	4.64	29.55	3.73	9.83	0.004
Plasmodium vivax
Most likely	18	8.006982 N, 38.724748 E	2.15	3602	82	31.17	9.74	3.25	33.63	<0.001
Secondary	1	7.893858 N, 38.692012 E	0.0	228	19	1.97	35.64	10.21	26.5	<0.001
Secondary	15	7.871003 N, 38.742309 E	1.83	2219	55	19.20	10.60	3.28	24.5	<0.001

* Plasmodium falciparum, Plasmodium vivax, or mixed, RR = Relative risk, LLR = Log likelihood ratio