Table 1.

Descriptive Statistics.

Variable:	NPI	School closings	Public gatherings	Quarantine	PHRT	Excess flu-related death rate 9/18–2/19	Relative peak excess flu-related death rate 9/18–2/19
Units	years	years	years	years	years	% of population per year	number
Mean	0.24	0.10	0.09	0.05	0.02	1.12	4.6
Median	0.18	0.08	0.08	0	0.02	1.15	4.4
Std dev.	0.13	0.06	0.05	0.07	0.02	1.32	1.3
Max	0.47	0.29	0.22	0.26	0.10	1.78	7.9
Min	0.08	0	0	0	−0.03	0.47	2.8

Variable:	Flu-related death rate 1910–1916, winter	Excess flu-related death rate 1/18–4/18	Excess all-cause death rate 9/18–2/19	Relative peak all-cause excess death rate 9/18–2/19	Distance from Boston	Population 1910	Area
Units	% of population per year	% of population per year	% of population per year	number	1000 miles	1000s	square miles
Mean	0.172	0.34	0.98	3.4	1.01	434	49.7
Median	0.172	0.27	0.99	2.9	0.83	224	37.0
Std dev.	0.046	0.35	0.45	1.3	0.92	760	53.4
Max	0.294	1.51	2.87	6.3	3.10	4768	286.8
Min	0.080	−0.35	0.21	1.9	0	100	6.3

Note: These statistics apply to variables defined and shown in Appendix Table A1.