Table 3. Correlations between COVID-19-related ICU admissions in the Paris region and temperatures measured from 19 days before ICU admission to the date of admission (study period: 31 March to 10 May 2020)–partial correlations adjusted on days since lockdown.

Day	Minimal observed temperature		Mean calculated temperature		Maximal observed temperature
	Correlation coefficient	p value	Correlation coefficient	p value	Correlation coefficient	p value
−19	0.442	0.004	0.283	0.077	0.384	0.014
−18	0.391	0.013	0.111	0.494	0.259	0.107
−17	0.345	0.029	0.05	0.758	0.201	0.214
−16	0.238	0.139	0.03	0.852	0.136	0.403
−15	0.200	0.215	0.079	0.627	0.146	0.367
−14	0.189	0.243	0.099	0.545	0.151	0.352
−13	0.188	0.246	0.162	0.318	0.188	0.245
−12	0.229	0.155	−0.108	0.508	0.045	0.785
−11	0.027	0.867	−0.282	0.078	−0.163	0.314
−10	−0.143	0.379	−0.411	0.008	−0.330	0.037
−9	−0.405	0.01	−0.497	<0.0025	−0.494	<0.0025
−8	−0.606	<0.0025	−0.633	<0.0025	−0.663	<0.0025
−7	−0.559	<0.0025	−0.494	<0.0025	−0.555	<0.0025
−6	−0.434	0.005	−0.429	0.006	−0.460	0.003
−5	−0.295	0.065	−0.410	0.009	−0.389	0.013
−4	−0.261	0.104	−0.494	<0.0025	−0.427	0.006
−3	−0.331	0.037	−0.468	<0.0025	−0.443	0.004
−2	−0.552	<0.0025	−0.484	<0.0025	−0.551	<0.0025
−1	−0.487	<0.0025	−0.439	0.005	−0.495	<0.0025
0	−0.341	0.031	−0.300	0.06	−0.345	0.029

ICU, intensive care unit.