Table 2.

Significant spatiotemporal clusters identified by the prospective multivariable permutation scan statistic model of COVID-19 cases in the State of Kuwait between 23 February and 25 April 2020. Clusters caused by migrant workers alone are highlighted in grey.

			Temporal frame
Cluster importance	Type of cases	Radius (km2)	From	To	aOc	bEc	Oc/Ec	p-value
1	cMW dCR	1.80	03 May	07 May	62 42	28.47 18.76	2.18 2.24	<0.001
2	MW	1.46	19 April	07 May	292	196.78	1.48	<0.001
3	MW CR	1.76	03 May	07 May	43 42	16.87 23.38	2.55 1.75	<0.001
4	MW CR	0.32–	03 May	07 May	23 4	5.06 1.23	4.54 3.25	<0.001
5	MW CR	0.24–	03 May	07 May	14 11	2.95 3.38	4.74 3.25	<0.001
6	MW	1.68	26 April	07 May	89	46.67	1.91	<0.001
7	MW	1.89	03 May	07 May	33	11.81	2.79	<0.001
8	MW	1.84	03 May	07 May	32	11.18	2.86	<0.001
9	MW	0.02	03 May	07 May	14	2.95	4.74	<0.001
10	MW CR	1.20–	03 May	07 May	20 5	6.54 1.85	3.06 2.71	<0.001
11	MW CR	1.99–	26 April	07 May	76 25	45.71 16.46	1.66 1.52	<0.001
12	MW	1.10	26 April	07 May	58	31.27	1.85	<0.001
13	MW CR	0.05–	03 May	07 May	8 8	1.69 2.46	4.74 3.25	<0.001

^aObserved cases.

^bExpected cases.

^cMigrant worker.

^dCitizens and residents.