TABLE 1.

Interrupted Time-Series Analysis of Firearm Injuries—All Sites in aggregate

	Coefficient	NW Std. Error	CI-Low	CI-High	P-Value
Pre-COVID-19 trend (Jan 2016–Feb 2020)	–0.47	0.09	<0.01	–0.65	–0.28
Level shift at start of COVID-19 (Mar 2020)	39.37	9.51	<0.01	20.24	58.50
Post-COVID-19 trend (Mar 2020–February 2021)	3.48	1.30	0.01	0.87	6.09

Coefficients represent estimates for change in number of firearm injuries per month.

CI indicates 95% confidence interval; NW Std Error, Newey West Standard Errors.

All estimates adjusted for month of the year (not shown) to account for seasonal trends and lags of up to 12 months.