Fig. 12.

Comparison of curves for Friuli Venezia Giulia region. Left: y–axis on normal scale, right: on logarithmic scale. Regression line shown for $log(\mathrm{daily}\mathrm{confirmed})-log(\mathrm{daily}\mathrm{tested})\sim time$ with $95\%$ prediction band. Slope of regression with $95\%$ confidence interval: $a_{\mathrm{f}}=-0.070(-0.082,-0.058)$, this corresponds to a half-life (in days) of 9.885(8.456, 11.894). The slope of the regression $log(\mathrm{daily}\mathrm{confirmed})\sim time$ is $a_{\mathrm{raw}}=-0.052(-0.061,-0.043)$ corresponding to a half-life (in days) of 13.315(11.352, 16.098). The slope of the regression $log(\mathrm{daily}\mathrm{tests})\sim time$ is 0.018(0.007, 0.025) corresponding to a doubling time (in days) of 38.365(27.562, 103.079). Ratio of slopes for $a_{\mathrm{f}}/a_{\mathrm{raw}}=1.347$, with corresponding half-lives’ ratio: 0.742. The slope of the regression $log(\mathrm{cumulative}\mathrm{confirmed})-log(\mathrm{cumulative}\mathrm{tested})\sim time$ is $-0.028(-0.029,-0.027)$ corresponding to a half-life (in days) of 24.866(24.101, 25.680)