Table 2.

Results from the Bayesian hierarchical model. Weekly data collected from 3104 counties during March 29 to August 29, 2021 (22 weeks); 95% uncertainty intervals were calculated from the posterior distributions.

Variable	Mean	95% uncertainty interval
Exposed to the campaign (%)	0.022	0.02 to 0.024
Population aged ≥85 years (%)	0.031	0.021 to 0.042
Non-Hispanic White (%)	0.004	0.003 to 0.004
Voted for democrats (%)	0.014	0.013 to 0.014
Median household income (US $1000)	0.058	0.054 to 0.062
Intercept	–0.005	–0.005 to –0.004