TABLE 2.

Events, average rates, and rate ratios of emergency department visits for drug overdoses across groups, January 2020 to September 2020

Group	Events	Average rate (per 100 000)	Rate ratio vs matched (95% CI)	Rate ratio vs housed (95% CI)
IRHH	3945	281.3	22.3 (20.7–24.0)	148.0 (142.7–153.5)
Matched a	879	12.6	Ref	–
Housed	10 721	1.9	–	Ref

^a Housed Ontarians residing in lowest income quintile neighborhoods with a recent hospital‐based health care encounter matched to IRHH (5:1) on age, sex, level of rurality, and Charlson Comorbidity Index score. IRHH = individuals with a recent history of homelessness.