Table 3.

The Longitudinal Multivariate Analysis of Mortality Change per Million

	Full model			mAIC
Parameter	Coefficient	SE	p-value	Coefficient	SE	p-value
Intercept	‒0.94	1.72	0.58	‒4.28	1.42	<0.01
Group (mask vs no mask)	1.33	0.48	<0.01a	0.65	0.49	0.19
National mask policy (yes vs no)	0.34	0.10	<0.01	0.34	0.10	<0.01
Number of days since the first COVID-19 case	0.16	<0.01	<0.01	0.16	<0.01	<0.01
Number of days since the first COVID-19 case (squared)	>‒0.01	<0.01	<0.01	>‒0.01	<0.01	<0.01
Monday (yes vs no)	>‒0.01	<0.01	<0.01	>‒0.01	<0.01	<0.01
Density (population count/Km2)	>‒0.01	<0.01	0.22
Population aged >65 years, %	0.10	0.04	0.02
Urban population, %	>‒0.01	<0.01	0.72
Sex (female vs male)	<0.01	<0.01	0.59
National movement restriction (yes vs no)	0.03	0.01	<0.01
Net migrants index	>‒0.01	<0.01	0.34
Health expenditure per capita	<0.01	<0.01	<0.01
Number of ICU beds per 100,000 population	0.02	0.03	0.57
Number of hospital beds per 1,000 population	‒0.16	0.06	<0.01
Social trust score	‒5.52	2.01	<0.01	2.43	1.63	0.14
Group x days since the first COVID-19 case	‒0.05	<0.01	<0.01	‒0.05	<0.01	<0.01
Group x days since the first COVID-19 case (squared)	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
National mask policy $\times$ number of days since the first COVID-19 case	‒0.01	<0.01	0.01	‒0.01	<0.01	0.02
National mask policy $\times$ number of days since the first COVID-19 case (squared)	<0.01	<0.01	0.10	<0.01	<0.01	0.10
R2 marginal	0.68			0.47
R2 conditional	0.97			0.97

Note: Boldface indicates statistical significance (p<0.05). Numbers are displayed up to 2 decimal points. Numbers within the range of 0.01 and ‒0.01 have been displayed accordingly.

mAIC, marginal Akaike Information Criterion; ICU, intensive care unit.