Global epidemiology and socio-economic development correlates of the reproductive ratio of COVID-19.

In the mixed linear regression model predicting log(R e ), the time trends were clearly significant and the 95% CIs around the estimated coefficients for day and day 2 clearly excluded the null effect (β day = −0.035 [95% CI −0.039 to −0.031]; β \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}${\rm day}^{2}$\end{document} = 0.000 24 [95% CI 0.000 21 to 0.000 28]).

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