By Case Rate

data from https://covid.cdc.gov/covid-data-tracker/#cases

States without a state-wide mask mandate have significantly different case rates per 100,00 citizens than those with no or partial mandates.

States in Rank-Order by Cases per 100,000

By Death Rate

There is no significant difference between the death rate in states with a state-wide mask mandate vs. those with a state-wide mask mandate.

States in Rank-Order by Death Rate