What is a Public Policy Index? It’s a measure of how many public policies a country has adopted to control the pandemic. The higher the number, the more policies a country has adopted. Our index is based on an index created by Oxford University. We track 9 public policies intended to help control the pandemic. These policies include the closing of schools and non-essential businesses, and stay-at-home orders, among other policies. Measures are weighted based on the date when they were implemented, and on how long they’ve been in place. The black dashed line represents the weighted average of all the states in the country.
Change in mobility: percentage change compared to usual mobility
Estimates based on Google data. These graphics show the change in population mobility in each state, compared to the usual mobility in the same time period (identified as the 0 baseline.) A decrease in mobility might also decrease the likelihood of community spread. The black dashed line represents the weighted average of all the states in the country.
Use of face masks
Index of the public health policy directive on the use of face masks, adjusted for the day of implementation compared to the registration of the first case in the country.
Tests per 100,000 inhabitants
A seven-day moving average of COVID-19 tests carried out per 100,000 inhabitants. Own calculations based on data from the Institute for Health Metrics and Evaluation (IHME).
Test Positivity Rate: Confirmed cases per total tests
A seven-day moving average of the percent of confirmed cases based on the total tests in a state. Own calculations based on data from the Institute for Health Metrics and Evaluation (IHME).