ArticleJournal of health economics2021
Face masks, public policies and slowing the spread of COVID-19: Evidence from Canada.
Article in Journal of health economics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 3 of them syntheses that pooled it.
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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.
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.
Who cites it
54 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Masks and respirators for prevention of respiratory infections: a state of the science review.Clinical microbiology reviews · 2024Pooled it
- Non-pharmacological measures implemented in the setting of long-term care facilities to prevent SARS-CoV-2 infections and their consequences: a rapid review.The Cochrane database of systematic reviews · 2021Pooled it
- The effect of different COVID-19 public health restrictions on mobility: A systematic review.PloS one · 2021Pooled it
- COVID-19 and Emergency Department Visits: An Interrupted Time Series Analysis of Ontario and Alberta, Canada.The western journal of emergency medicine · 2026Article
- Lessons Learned from the Policies Developed for the Management of the COVID-19 Pandemic in Northern Cyprus: A Mixed-Methods Study.Healthcare (Basel, Switzerland) · 2025Article
- Optimal pandemic control strategies and cost-effectiveness of COVID-19 non-pharmaceutical interventions in the United States.BMC global and public health · 2025Article
- A Retrospective Study of the Effects of COVID-19 Non-Pharmaceutical Interventions on Influenza in Canada.Infectious disease reports · 2025Article
- Detrimental Effects of Anti-Nucleocapsid Antibodies in SARS-CoV-2 Infection, Reinfection, and the Post-Acute Sequelae of COVID-19.Pathogens (Basel, Switzerland) · 2024Review
- A comparative study of governmental financial support and resilience of self-employed people in Sweden and Canada during the COVID-19 pandemic.International journal of circumpolar health · 2024Article
- The acute care burden of asthma in children was profoundly reduced during the COVID-19 pandemic: A multi-centre Canadian retrospective study.Paediatrics & child health · 2024Article
- SARS-CoV-2 Transmission in Alberta, British Columbia, and Ontario, Canada, January 2020-January 2022.Emerging infectious diseases · 2024Article
- Impact of community mask mandates on SARS-CoV-2 transmission in Ontario after adjustment for differential testing by age and sex.PNAS nexus · 2024Article
- 'It's quite a balancing act': A qualitative study of parents' experiences and information needs related to the COVID-19 pandemic.Health expectations : an international journal of public participation in health care and health policy · 2024Article
- COVID-19 prevention and control effect of non-pharmaceutical interventions-fuzzy-sets qualitative comparative analysis based on 69 countries in the world.Frontiers in public health · 2024Article
- Real-time forecasting of COVID-19 spread according to protective behavior and vaccination: autoregressive integrated moving average models.BMC public health · 2023Article
- A comparative study of eight COVID-19 protective measures and their impact on Swiss tourists' travel intentions.Tourism management · 2023Article
- Face mask is an efficient tool to fight the Covid-19 pandemic and some factors increase the probability of its adoption.Scientific reports · 2023Article
- Do more stringent policies reduce daily COVID-19 case counts? Evidence from Canadian provinces.Economic analysis and policy · 2023Article
- Interaction between travel restriction policies and the spread of COVID-19.Transport policy · 2023Article
- Influence of Mask Wearing during COVID-19 Surge and Non-Surge Time Periods in Two K-12 Public School Districts in Georgia, USA.International journal of environmental research and public health · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We estimate the impact of indoor face mask mandates and other non-pharmaceutical interventions (NPI) on COVID-19 case growth in Canada. Mask mandate introduction was staggered from mid-June to mid-August 2020 in the 34 public health regions in Ontario, Canada's largest province by population. Using this variation, we find that mask mandates are associated with a 22 percent weekly reduction in new COVID-19 cases, relative to the trend in absence of mandate. Province-level data provide corroborating evidence. We control for mobility behaviour using Google geo-location data and for lagged case totals and case growth as information variables. Our analysis of additional survey data shows that mask mandates led to an increase of about 27 percentage points in self-reported mask wearing in public. Counterfactual policy simulations suggest that adopting a nationwide mask mandate in June could have reduced the total number of diagnosed COVID-19 cases in Canada by over 50,000 over the period July-November 2020. Jointly, our results indicate that mandating mask wearing in indoor public places can be a powerful policy tool to slow the spread of COVID-19.
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Registered trials
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.