Fig. 19.

Comparison of curves for P.A. Trento region. Left: y–axis on normal scale, right: on logarithmic scale. Top row: scaling with respect to population death tolls not presented as P. A. Bolzano is merged with P. A. Trento in deaths date provided by ISTAT. 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: $a_{\mathrm{f}}=-0.083(-0.099,-0.068)$, this corresponds to a doubling time (in days) of 8.308(7.033, 10.148). The slope of the regression $log(\mathrm{daily}\mathrm{confirmed})\sim time$ is $a_{\mathrm{raw}}=-0.055(-0.069,-0.040)$ corresponding to a half-life (in days) of 12.714(10.010, 17.420). The slope of the regression $log(\mathrm{daily}\mathrm{tests})\sim time$ is 0.029(0.017, 0.031) corresponding to a doubling time (in days) of 23.975(22.069, 39.784). Ratio of slopes for $a_{\mathrm{f}}/a_{\mathrm{raw}}=1.530$, with corresponding half-lives’ ratio: 0.653. The slope of the regression $log(\mathrm{cumulative}\mathrm{confirmed})-log(\mathrm{cumulative}\mathrm{tested})\sim time$ is $-0.027(-0.028,-0.027)$ corresponding to a half-life (in days) of 25.537(25.139, 25.948)