ArticleViruses2021
Mental Health and Substance Use Associated with Hospitalization among People with COVID-19: A Population-Based Cohort Study.
Article in Viruses, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.
What it found
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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
16 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- COVID-19 risk, course and outcome in people with mental disorders: a systematic review and meta-analyses.Epidemiology and psychiatric sciences · 2023Pooled it
- Risk of COVID-19 infection and the associated hospitalization, ICU admission and mortality in opioid use disorder: a systematic review and meta-analysis.Addiction science & clinical practice · 2022Pooled it
- Nipah virus in the era of global connectivity: molecular evolution, transmission risk, and preparedness strategies.Virus genes · 2026Review
- Changes in Traumatic Brain Injury Patterns Before and During the COVID-19 Pandemic: A Single-Center Study in Brazil.Cureus · 2025Article
- A Population-Based Study of SARS-CoV-2 IgG Antibody Responses to Vaccination in Manitoba.Vaccines · 2024Article
- Risk of Severe COVID-19-Related Outcomes among Patients with Cirrhosis: A Population-Based Cohort Study in Canada.Viruses · 2024Article
- Cohort profile: the British Columbia COVID-19 Cohort (BCC19C)-a dynamic, linked population-based cohort.Frontiers in public health · 2024Article
- Article
- Changes in emergency department use in British Columbia, Canada, during the first 3 years of the COVID-19 pandemic.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2023Article
- COVID-19 hospitalisations in immunocompromised individuals in the Omicron era: a population-based observational study using surveillance data in British Columbia, Canada.Lancet regional health. Americas · 2023Article
- Review
- A stakeholder-driven framework for measuring potential change in the health risks of people who inject drugs (PWID) during the COVID-19 pandemic.The International journal on drug policy · 2022Article
- Observed versus expected rates of myocarditis after SARS-CoV-2 vaccination: a population-based cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2022Observational
- Article
- Social distancing and changes in drug use: Results from a cross-sectional study during the COVID-19 pandemic in Brazil.Frontiers in psychiatry · 2022Article
- Association between close interpersonal contact and vaccine hesitancy: Findings from a population-based survey in Canada.Frontiers in public health · 2022Article
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
This study identified factors associated with hospital admission among people with laboratory-diagnosed COVID-19 cases in British Columbia. The study used data from the BC COVID-19 Cohort, which integrates data on all COVID-19 cases with data on hospitalizations, medical visits, emergency room visits, prescription drugs, chronic conditions and deaths. The analysis included all laboratory-diagnosed COVID-19 cases in British Columbia to 15 January 2021. We evaluated factors associated with hospital admission using multivariable Poisson regression analysis with robust error variance. Of the 56,874 COVID-19 cases included in the analysis, 2298 were hospitalized. Factors associated with increased hospitalization risk were as follows: male sex (adjusted risk ratio (aRR) = 1.27; 95% CI = 1.17-1.37), older age (
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Registered trials
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