Table 1.

Significant spatiotemporal clusters identified by the retrospective 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	1.55	29 March	18 April	536	210.96	2.54	<0.001
2	MW	1.62	23 February	21 March	87	60.0	1.45	<0.001
3	MW	1.00	29 March	11 April	134	51.27	2.61	<0.001
4	MW dCR	0.44–	17 March–	21 March–	9 5	0.15 0.40	61.81 12.52	<0.001
5	MW	0.89	29 March	04 April	46	10.00	4.60	<0.001
6	MWCR	1.99–	23 February–	28 March–	27 23	4.04 11.23	6.68 2.05	<0.001
7	MW	1.93	26 April	02 May	85	31.61	2.69	<0.001
8	MW	0.08	12 April	14 April	23	2.65	8.68	<0.001
9	MWCR	1.80–	05 May–	07 May–	62 42	28.47 18.76	2.18 2.24	<0.001
10	MW	0.45	26 April	02 May	43	12.16	3.54	<0.001
11	MW	1.16	26 April	02 May	164	91.33	1.80	<0.001
12	MWCR	1.62–	17 March–	28 March–	8 3	0.30 0.63	26.72 4.80	<0.001
13	MWCR	1.76–	03 May–	07 May–	43 41	16.87 23.38	2.55 1.75	<0.001
14	MW	0. 82	22 March	28 March	12	0.29	41.37	<0.001
15	MW	0.60	05 April	11 April	16	1.96	8.17	<0.001
16	MW	0.32	03 May	07 May	26	5.06	5.13	<0.001
17	MWCR	0.48–	22 March–	28 March–	4 4	0.10 0.32	39.01 17.23	<0.001
18	MWCR	0.06–	22 March–	28 March–	3 3	0.038 25.35	78.01 16.92	<0.001
19	MW	0. 02	17 March	28 March	8	0.56	14.28	<0.001
20	MW	0.78	19 April	25 April	26	6.42	4.05	<0.001
21	MWCR	0.02–	23 February–	29 February–	3 2	0.03 0.01	121.901 30.29	<0.001
22	MW	0. 02	03 May	07 May	25	6.44	3.88	<0.001
23	MW	0. 04	08 March	14 March	4	0.03	142.71	<0.021
24	MWCR	1.81–	08 March–	21 March–	10 10	1.38 3.26	7.26 3.07	<0.029
25	MW	0.61	29 March	04 April	11	1.18	3.88	<0.042

^aObserved cases.

^bExpected cases.

^cMigrant worker.

^dCitizens and residents.