Fig. 13.
Effect of mandating masks on March 14th in Washington State. The vertical text denotes the dates that Washington imposed each policy. To compute the estimated and counterfactual paths we use the average of two estimated coefficients as reported in column “Average” of Table 7. We set initial and to their values first observed in the state we are simulating. We hold all other regressors at their observed values. The shaded region is a point-wise 90% confidence interval. See Appendix B.4 for more details.