Evidence map›Paper›PMID 34785528›Full record

ArticleCMAJ open

Acute mental health service use following onset of the COVID-19 pandemic in Ontario, Canada: a trend analysis.

Natasha R Saunders, Alene Toulany, Bhumika Deb, Rachel Strauss, Simone N Vigod, Astrid Guttmann, Maria Chiu, Anjie Huang, Kinwah Fung, Simon Chen and 1 more

Open access · diamondAbstract read
In one paragraph

Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  5. COVID-19 in Rural Ontario Communities: Exploring Women's Mental Health During a Pandemic.International journal of environmental research and public health · 2025
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  7. Effect of the COVID-19 Pandemic on Psychiatric Service Use Among Psychiatric Outpatients.Turk psikiyatri dergisi = Turkish journal of psychiatry · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 2 countries.

Natasha R SaundersDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont. Natasha.saunders@sickkids.ca.
Alene ToulanyDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Bhumika DebDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Rachel StraussDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Simone N VigodDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Astrid GuttmannDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Maria ChiuDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Anjie HuangDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Kinwah FungDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Simon ChenDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Paul KurdyakDepartment of Paediatrics (Saunders, Toulany, Guttmann), University of Toronto, Toronto, Ont.; The Hospital for Sick Children (Toulany), Toronto, Ont.; Child Health Evaluative Sciences (Saunders, Toulany), SickKids Research Institute, Toronto, Ont.; ICES (Saunders, Deb, Strauss, Vigod, Guttmann, Chiu, Huang, Fung, Chen), Toronto, Ont.; Institute of Health Policy, Management and Evaluation (Vigod, Chiu, Kurdyak), University of Toronto, Toronto, Ont.; Edwin S.H. Leong Centre for Healthy Children (Guttmann), University of Toronto, Toronto, Ont.; Women's College Hospital and Women's College Research Institute (Vigod, Kurdyak), Toronto, Ont.; Department of Psychiatry (Vigod, Kurdyak), Temerty Faculty of Medicine, University of Toronto, Toronto, Ont.; Centre for Addiction and Mental Health (Kurdyak), Toronto, Ont.
Centre for Addiction and Mental Health · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe extent to which heightened distress during the COVID-19 pandemic translated to increases in severe mental health outcomes is unknown. We examined trends in psychiatric presentations to acute care settings in the first 12 months after onset of the pandemic.

methodsThis was a trends analysis of administrative population data in Ontario, Canada. We examined rates of hospitalizations and emergency department visits for mental health diagnoses overall and stratified by sex, age and diagnostic grouping (e.g., mood disorders, anxiety disorders, psychotic disorders), as well as visits for intentional self-injury for people aged 10 to 105 years, from January 2019 to March 2021. We used Joinpoint regression to identify significant inflection points after the onset of the pandemic in March 2020.

resultsAmong the 12 968 100 people included in our analysis, rates of mental health-related hospitalizations and emergency department visits declined immediately after the onset of the pandemic (peak overall decline of 30% [hospitalizations] and 37% [emergency department visits] compared to April 2019) and returned to near prepandemic levels by March 2021. Compared to April 2019, visits for intentional self-injury declined by 33% and remained below prepandemic levels until March 2021. We observed the largest declines in service use among adolescents aged 14 to 17 years (55% decline in hospitalizations, 58% decline in emergency department visits) and 10 to 13 years (56% decline in self-injury), and for those with substance-related disorders (33% decline in emergency department visits) and anxiety disorders (61% decline in hospitalizations).

interpretationContrary to expectations, the abrupt decline in acute mental health service use immediately after the onset of the pandemic and the return to near prepandemic levels that we observed suggest that changes and stressors in the first 12 months of the pandemic did not translate to increased service use. Continued surveillance of acute mental health service use is warranted.

Indexed as

AdolescentAdultAgedAged, 80 and overAnxiety DisordersChildCOVID-19Emergency Service, HospitalFemaleHospitalizationHumansMaleMental Health ServicesMiddle AgedMood DisordersOntario

Identifiers

PMID34785528
PMCPMC8598241
OpenAlexW3211394805

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.