Evidence map›Paper›PMID 31166621›Full record

ArticleAddiction (Abingdon, England)2019

Modelling the combined impact of interventions in averting deaths during a synthetic-opioid overdose epidemic.

Michael A Irvine, Margot Kuo, Jane A Buxton, Robert Balshaw, Michael Otterstatter, Laura Macdougall, M-J Milloy, Aamir Bharmal, Bonnie Henry, Mark Tyndall and 2 more

Open access · greenAbstract read
In one paragraph

Article in Addiction (Abingdon, England), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed, 5 pooled it
26.2field-weighted citation impact, top 1% 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

117 citing papers in PubMed, 5 syntheses or guidelines pooled it, 238 citations in OpenAlex.

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  19. Sur la route des surdoses: un portrait canadien.Canadian journal of public health = Revue canadienne de sante publique · 2025
    Article
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57 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 2 countries.

Michael A IrvineInstitute of Applied Mathematics, University of British Columbia, Vancouver, BC, Canada.ORCID 0000-0003-4785-8998
Margot KuoBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
Jane A BuxtonBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
Robert BalshawGeorge and Fay Yee Centre for Healthcare Innovation, University of Manitoba, Winnipeg, MB, Canada.ORCID 0000-0002-2455-8792
Michael OtterstatterBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
Laura MacdougallBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
M-J MilloyBritish Columbia Centre on Substance Use, Vancouver, BC, Canada.ORCID 0000-0003-3821-6221
Aamir BharmalFraser Health, Surrey, British Columbia, Canada.
Bonnie HenryMinistry of Health, Victoria, British Columbia, Canada.
Mark TyndallBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
Daniel CoombsInstitute of Applied Mathematics, University of British Columbia, Vancouver, BC, Canada.ORCID 0000-0002-8038-6278
Mark GilbertBritish Columbia Centre for Disease Control, Vancouver, BC, Canada.
University of British Columbia · CABC Centre for Disease Control · CABritish Columbia Centre on Substance Use · CAFraser Health · CAGeorge & Fay Yee Centre for Healthcare Innovation · CAMinistry of Health · CA

Funding

Impacts of universal access to HIV/AIDS care among HIV+ injection drug usersU01DA021525 · NIDA · UNIVERSITY OF BRITISH COLUMBIA · PI MILLOY, M-J · 2017 to 2024
$4.3M
CIHRNatural Science and Engineering Research Council Discovery Grant RGPIN-2015-04611Natural Sciences and Engineering Research Council of CanadaNIDA NIH HHS U01 DA021525
6 · The paper itself

Abstract

BACKGROUND AND

aimsThe province of British Columbia (BC) Canada has experienced a rapid increase in illicit drug overdoses and deaths during the last 4 years, with a provincial emergency declared in April 2016. These deaths have been driven primarily by the introduction of synthetic opioids into the illicit opioid supply. This study aimed to measure the combined impact of large-scale opioid overdose interventions implemented in BC between April 2016 and December 2017 on the number of deaths averted.

designWe expanded on the mathematical modelling methodology of our previous study to construct a Bayesian hierarchical latent Markov process model to estimate monthly overdose and overdose-death risk, along with the impact of interventions. SETTING AND CASES: Overdose events and overdose-related deaths in BC from January 2012 to December 2017.

interventionsThe interventions considered were take-home naloxone kits, overdose prevention/supervised consumption sites and opioid agonist therapy MEASUREMENTS: Counterfactual simulations were performed with the fitted model to estimate the number of death events averted for each intervention and in combination.

findingsBetween April 2016 and December 2017, BC observed 2177 overdose deaths (77% fentanyl-detected). During the same period, an estimated 3030 (2900-3240) death events were averted by all interventions combined. In isolation, 1580 (1480-1740) were averted by take-home naloxone, 230 (160-350) by overdose prevention services and 590 (510-720) were averted by opioid agonist therapy.

conclusionsA combined intervention approach has been effective in averting overdose deaths during British Columbia's opioid overdose crisis in the period since declaration of a public health emergency (April 2016-December 2017). However, the absolute numbers of overdose deaths have not changed.

Indexed as

Harm ReductionBayes TheoremBritish ColumbiaDrug OverdoseHumansMarkov ChainsModels, TheoreticalNaloxoneNarcotic AntagonistsNeedle-Exchange ProgramsOpiate Substitution TreatmentOpioid EpidemicOpioid-Related DisordersNaloxoneNarcotic AntagonistsBayesian modellingopioid agonist therapyopioid overdose crisisoverdose prevention sitespublic health interventiontake-home naloxone

Identifiers

PMID31166621
PMCPMC6684858
OpenAlexW2948067523

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.