Table 2:

Rates of visits to the emergency department among community-dwelling people with dementia during the COVID-19 pandemic and historical period^* in Ontario, by urgency and chapter from the International Statistical Classification of Diseases and Related Health Problems, 10th Revision (2019–2021)

Reason for visit	Weekly rate of visits per 100 people

	Lowest rate^*		Latest week^*

	Historical period	Pandemic period	Historical period	Pandemic period
Overall	2.41	1.20	2.24	1.96

Urgency

Nonurgent	0.41	0.14	0.32	0.22

Urgent	2.04	1.05	1.91	1.74

ICD-10-CA chapter

Infections	0.07	0.03	0.06	0.05

Neoplasms	0.009	0.002	0.009	0.005

Blood diseases	0.02	0.01	0.03	0.01

Endocrine diseases	0.06	0.02	0.05	0.06

Mental and behavioural disorders	0.16	0.07	0.13	0.13

Dementia^†	0.06	0.02	0.05	0.06

Delirium	0.04	0.02	0.05	0.04

Nervous system diseases	0.04	0.01	0.04	0.04

Eye diseases	0.01	0.005	0.02	0.02

Ear diseases	0.01	0.002	0.008	0.008

Circulatory diseases	0.16	0.08	0.16	0.12

Cardiac diseases (AMI, stroke and heart failure)	0.08	0.04	0.09	0.06

Respiratory diseases	0.12	0.08	0.14	0.09

Influenza, pneumonia and chronic lower respiratory infections	0.08	0.05	0.11	0.06

COPD	0.05	0.02	0.04	0.03

Digestive diseases	0.13	0.05	0.12	0.11

Skin diseases	0.05	0.02	0.05	0.04

Musculoskeletal diseases	0.14	0.04	0.11	0.09

Genitourinary diseases	0.12	0.07	0.15	0.13

Kidney or urinary tract infection	0.11	0.04	0.11	0.09

Signs, symptoms, and abnormal clinical and laboratory findings	0.63	0.29	0.57	0.49

Signs and symptoms involving cognition	0.08	0.04	0.09	0.08

Injuries and poisoning	0.42	0.20	0.41	0.35

Fall-related injuries	0.28	0.16	0.30	0.25

Nonfall-related injuries	0.06	0.02	0.06	0.05

Factors influencing health status	0.08	0.05	0.07	0.08

Other

Adverse drug reactions	0.02	0.006	0.01	0.01

Note: AMI = acute myocardial infarction, COPD = chronic obstructive pulmonary disease, ICD-10-CA = Canadian version of the International Statistical Classification of Diseases and Related Health Problems, 10th Revision.
↵* The week of the lowest rate is the lowest rate during the pandemic period (week of Mar. 1, 2020, to week of Feb. 21, 2021). Rates for equivalent weeks in the historical period (week of Mar. 3, 2019, to week of Feb. 23, 2020) are also shown. The latest weekly rate is as of the week of Feb. 21, 2021 (pandemic period) and the week of Feb. 23, 2020 (historical period).
↵† Dementia codes include F00–F03, G30.