Table 4.

Interrupted time-series analysis with segmented Poisson regression models for study outcomes of the social distancing intervention

	Incidence rate ratio	95% CI
Total population
All injury	0.67	0.60 to 0.75
In-hospital mortality	0.91	0.77 to 1.07
Clinically severe injury	0.82	0.78 to 0.87
	HR	95% CI
All injury
In-hospital mortality	1.38	1.15 to 1.65
Clinically severe injury	1.24	1.12 to 1.38
Level I and level II EDs
Intentional injury	1.28	1.18 to 1.40
Road traffic injury	0.92	0.88 to 0.97
EMS use
Home	1.18	1.10 to 1.26
Distancing target area	0.44	0.39 to 0.49
Non-distancing target	1.05	0.97 to 1.14

Incidence rate per 100 000 person-days was calculated using the 2019 mid-year population of Census data.

ED, emergency department; EMS, emergency medical service; HR, Hazard ratio.