id author title date pages extension mime words sentences flesch summary cache txt cord-271432-pn02p843 Banerjee, Tannista U.S. county level analysis to determine If social distancing slowed the spread of COVID-19 2020-07-06 .txt text/plain 3743 223 64 That is, social distancing in this study was measured by what proportion of a county's population is staying home completely; how much time they were spending indoors, versus outdoors, in public spaces like working full-time, which is critical for this analysis. To analyze the effect of these social distancing measures on COVID-19 cases and how this effect is working on the treatment counties comparing to the control counties, we estimated the following difference-in-difference (DID) model: Column 1 of Table 2 shows that after controlling for county, state, time and county-time fixed effects, counties where NPIs were enacted, full time work and distance-travelled-from-home increased the COVID-19 cases by 54% (p-value 0.001) and 13% (p-value 0.001), respectively. After 15 days of enactment of the NPIs, the effects of full time work and distance travelled from home on COVID-19 infection increased to 84% and 25% (compared to 54% and 13% immediate effects). ./cache/cord-271432-pn02p843.txt ./txt/cord-271432-pn02p843.txt