id author title date pages extension mime words sentences flesch summary cache txt cord-164718-f6rx4h3r Wellenius, Gregory A. Impacts of State-Level Policies on Social Distancing in the United States Using Aggregated Mobility Data during the COVID-19 Pandemic 2020-04-21 .txt text/plain 4139 174 47 In summary, using anonymized, aggregated, and differentially private data from Google users who opted in to Location History, we found that state-mandated social distancing orders were effective in decreasing time spent away from places of residence, as well as reducing visits to work, and visits to both grocery stores/pharmacies and retail/recreational locations. Our overall approach was to use regression discontinuity using each county's recent past as its own control to assess the impact of state declarations of emergency and targeted social distancing policies on the relative changes in the average time spent away from places of residence, the number of visits to work, and the number of visits to: 1) grocery stores and pharmacies, 2) retail stores, recreational sites, and eateries, 3) transit stops, and 4) parks. ./cache/cord-164718-f6rx4h3r.txt ./txt/cord-164718-f6rx4h3r.txt