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. 2021 Jun 18;201:111529. doi: 10.1016/j.envres.2021.111529

Table 4.

Correlation Kendall's tau b, using ICUs admission.

		Italy	N = 20
		Import Export	GDP PC	Density of population	ICUs Admission 1 peak	ICUs Admission 2 peak	ICUs Admission 3 peak
Import Export	Correlation Coefficient	1	.295^a	.599**	.723**	.758**	.768**
GDP PC	Correlation Coefficient	.295^a	1	0.143	.406**	0.242	0.253
Density of population	Correlation Coefficient	.599**	0.143	1	.553**	.610**	.706**
		France	N = 13
Import Export	Correlation Coefficient	1	0.256	.462^a	.744**	.684**	.692**
GDP PC	Correlation Coefficient	0.256	1	.487^a	0.154	0.245	0.256
Density of population	Correlation Coefficient	.462^a	.487^a	1	0.308	.400^a	.359^a
	Spain	N = 19
Import Export	Correlation Coefficient	1	.298^a	−0.041	.743**	.774**	.645**
GDP PC	Correlation Coefficient	.298^a	1	0.006	0.275	0.27	0.129
Density of population	Correlation Coefficient	−0.041	0.006	1	−0.018	−0.106	−0.106

^a

Correlation is significant at the 0.05 level (1-tailed). ** Correlation is significant at the 0.01 level (1-tailed).