TABLE 4.

he impact of age structure and stringency policy on spread of COVID-19 cases.

Independent Variables	Quantile (25)	Probability	Quantile (50)	Probability	Quantile (75)	Probability
(In terms of April 2, 2020)*
Median age	1.19	0.11	5.70	0.000	20.32	0.0002
Stringency index	−0.27	0.21	−1.34	0.003	−4.47	0.0011
(In terms of June2, 2020)**
Median age	8.03	0.08	24.29	0.0001	90.01	0.0000
Stringency index	−1.54	0.36	−4.82	0.0244	−18.31	0.0007
(In terms of April 2, 2020)*
Aged-65_older	6.29	0.0066	13.81	0.0000	38.87	0.0002
Stringency index	−0.29	0.0538	−0.53	0.0000	−1.28	0.0081
(In terms of June 2, 2020)**
Aged-65_older	23.92	0.0154	61.30	0.0007	160.63	0.0000
Stringency index	−0.61	0.5313	−1.40	0.2607	−3.46	0.0391
(In terms April 2, 2020)*
Aged-65_older	8.44	0.0101	21.57	0.0000	60.56	0.0000
Stringency index	−0.22	0.0924	−0.48	0.0004	−1.15	0.0001
(In terms of June 2, 2020)**
Aged-70_older	36.70	0.0076	97.57	0.0017	246.78	0.0000
Stringency index	−0.53	0.5286	−1.23	0.3221	−2.85	0.0304

Because of the absence of the stringency index data, August 2020 outputs are not available. (*) As of April 2, 2020, in 159 countries, (**) as of June 2, 2020, in 160 countries.