ArticleDrug and alcohol dependence2022
Impact of the COVID-19 pandemic on the prevalence of opioid agonist therapy discontinuation in Ontario, Canada: A population-based time series analysis.
Article in Drug and alcohol dependence, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 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.
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Who cites it
7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- The impact of relaxing restrictions on take-home doses during the COVID-19 pandemic on program effectiveness and client experiences in opioid agonist treatment: a mixed methods systematic review.Substance abuse treatment, prevention, and policy · 2023Pooled it
- Impact of COVID-19 Pandemic on Adherence to Chronic Therapies: A Systematic Review.International journal of environmental research and public health · 2023Pooled it
- Article
- Drug treatment and support service utilization amidst the COVID-19 pandemic among people who inject drugs in Baltimore, Maryland: An interrupted time-series analysis, 2015-2022.The International journal on drug policy · 2025Article
- Patient and Prescriber characteristics associated with return to daily-dispense methadone: A multilevel cohort study.PLOS mental health · 2025Article
- Changes to methadone maintenance therapy in the United States, Canada, and Australia during the COVID-19 pandemic: A narrative review.Journal of substance use and addiction treatment · 2023Review
- Opioid use in the era of COVID-19: a multifaceted study of the opioid epidemic in Canada.Frontiers in pharmacology · 2023Article
Corrections and comments
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Authors and funding
11 authors at 7 institutions in 2 countries.
Funding
Abstract
backgroundWe assessed the impact of COVID-19, which includes the declaration of a state of emergency and subsequent release of pandemic-specific OAT guidance (March 17, 2020 to March 23, 2020) on the prevalence of OAT discontinuation.
methodsWe conducted a population-based time series analysis using interventional autoregressive integrated moving average models among Ontario residents who were stable (>60 days of continuous use) and not yet stable on OAT. Specifically, we examined whether COVID-19 impacted the weekly percentage of individuals who discontinued OAT, overall and stratified by treatment type (methadone vs. buprenorphine/naloxone). Additionally, we compared demographic characteristics and patient outcomes among people stable on OAT who discontinued treatment during (March 17, 2020 to November 30, 2020) and prior (July 3, 2019 to March 16, 2020) to the pandemic.
resultsThe weekly prevalence of OAT discontinuation across the study period ranged between 0.6% and 1.1%, among those stable on treatment compared to 7.3% and 16.6%, among those not stable on treatment. Following COVID-19, there was no significant change in the percentage of Ontarians who discontinued OAT, regardless of whether they were stabilized on treatment. Among those stable on OAT, a similar proportion of patients restarted therapy and experienced opioid-related harm following an OAT discontinuation. However, mortality following OAT discontinuation must be noted, as approximately 1.4% and 0.8% of people who discontinued methadone and buprenorphine/naloxone respectively, died within 30 days of discontinuation.
conclusionsTrends in the prevalence of OAT discontinuation did not significantly change during the first eight months of the COVID-19 pandemic.
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