Table 1.

Descriptive Statistics

	School shootings
	Fatal	Nonfatal	None
School characteristics
Enrollment (1,000s)	1.22	0.90	0.44
Private	0.13	0.07	0.22
High school	0.40	0.55	0.15
% White	0.49	0.43	0.59
% Black	0.17	0.37	0.16
% Reduced lunch	0.43	0.51	0.44
Characteristics of shootings
Victims killed	2.80	0.00	–
Victims injured	0.47	0.76	–
Shooter age	25.60	18.46	–
Shooter male	0.80	0.97	–
Number of schools	15	29	127,363
Youth antidepressant prescriptions per 1,000
Treatment areas
Preshooting/postshooting	7.70/9.52	5.64/6.86	–
Reference areas
Primary, preshooting/postshooting	8.09/9.05	8.71/10.02	–
Alt. A, overall	6.87	10.45	–
Alt. B, preshooting/postshooting	11.07/12.63	7.09/7.95	–

The first two columns report averages for schools with shootings in our analysis. The last column reports averages for all US schools. Youth antidepressant prescriptions per 1,000 refer to mean monthly antidepressant prescriptions for individuals under age 20. Treatment (primary reference) areas consist of providers practicing 0 to 5 miles (10 to 15 miles) from schools that experienced a shooting. Alternative (Alt.) reference areas A and B consist of providers practicing 0 to 5 miles from nonshooting schools with the highest predicted shooting probability (A) and with characteristics matched to individual shooting schools (B). We cannot separate preshooting and postshooting prescription rates for alternative reference areas A, as the comparison schools in those areas are not matched to specific shooting dates.