. 2020 May 29;188:109748. doi: 10.1016/j.envres.2020.109748

Table 1.

The correlation (r) between case and death of COVID-19 (per10⁵ people) and independent variables up to April 2, 2020.

Earth category	variable	GDP per capita ($)	Temperature (^oC)	Latitude (degree)	Longitude (degree)
Globally	PCP^a	0.827**	−0.50**	0.54**	−0.16*
Globally	PDP^a	0.50**	−0.50**	0.38**	−0.18*
North	PCP^a	0.82**	−0.51**	0.53**	−0.22*
North	PDP^a	0.50**	−0.46**	0.41**	−0.19**
South	PCP^a	0.83**	−0.45*	0.39**	0.47**
South	PDP^a	0.57**	−0.25	0.054	0.12

**P < 0.01, *P < 0.05; PCP = proportion of cases to population per 10⁵, PDP: proportion of deaths to population per 10⁵.