Figure 6

Mask adoption versus policy stringency index
Note The X-axis refers to the mask adoption proportion: a 0.8 value means that 80 respondents over 100 declared to use a face mask. The Y-axis denotes the Stringency index. ’maskfinal’ denotes the proportion of people using a face mask in the final observation of our sample (15th July, 2020). The red line refers to a quadratic fit.