eTable.

Results of regression model examining percent change in weekly visits to dental offices between 2019 and 2020.^∗

TERCILE OF COUNTY-LEVEL COVID-19 INCIDENCE RATE	COEFFICIENT	95% CONFIDENCE INTERVAL	P VALUE
Lowest [Reference]
Middle	−8.9	−10.7 to −7.1	< .001
Highest	−5.6	−7.7 to −3.5	< .001
Intercept†	−0.6	−2.1 to 0.9	.435

^∗Data are from a linear regression model with robust standard errors, using the county-week as the unit of observation (N = 66,817), examining the percentage change in weekly visits to dental offices during the pandemic (weeks of March 8, 2020, and later) compared with the same period in 2019.

^†The intercept is interpreted as the average change in weekly visits between 2019 and 2020 during the pandemic among counties with the lowest COVID-19 incidence.