Table 2

Predicted number of monthly paediatric firearm-related encounters and per cent change relative to pre-pandemic from adjusted Poisson models, overall and stratified by race/ethnicity and age group

School mode	Overall†		P value	By race/ethnicity					P value
	Overall†			Non-Hispanic black			Non-Hispanic white
	Number per month	% change from pre pandemic		Number per month	% change from pre pandemic	P value	Number per month	% change from pre pandemic
Pre pandemic (January 2018–February 2020)	3.9	–		1.6	–		1.5	–
Closed (March 2020–August 2020)	5.6 42	42	***	2.8	70	***	1.9	29	*
Virtual/hybrid (September 2020–February 2021)	4.5	15		2.4	48	*	1.8	19
In-person (March 2021–December 2021)	4.8	23	***	3.0	80	***	0.8	−45	***

School mode	By age group
	Age 5–11		P value	Age 12–15		P value	Age 16–17		P value
	Number per month	% change from pre pandemic	P value	Number per month	% change from pre pandemic	P value	Number per month	% change from pre pandemic	P value
Pre pandemic (January 2018–February 2020)	0.4	–		1.4	–		2.1	–
Closed (March 2020–August 2020)	1.2	205	***	2.4	69	***	2.1	−2
Virtual/hybrid (September 2020–February 2021)	0.1	−85		2.2	55	*	2.2	5
In-person (March 2021–December 2021)	0.6	61		1.6	14		2.7	26	**

*p<0.05, **p<0.01, ***p<0.001.
†All models are predicted using a Poisson model with month of year fixed effects and robust standard errors.
*All models are predicted using a Poisson model with month of year fixed effects and robust standard errors.