Evidence map›Paper›PMID 26993373›Full record

ArticleDrug and alcohol dependence2016

Non-fatal overdose as a risk factor for subsequent fatal overdose among people who inject drugs.

Alexander Caudarella, Huiru Dong, M J Milloy, Thomas Kerr, Evan Wood, Kanna Hayashi

Abstract read
In one paragraph

Article in Drug and alcohol dependence, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed, 4 pooled it
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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

142 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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  4. Risk Factors for Drug Overdose in Young People: A Systematic Review of the Literature.Journal of child and adolescent psychopharmacology · 2019
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  11. Developing Longitudinal Post-Overdose Care: A Call to Action.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2026
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82 more citing papers are in PubMed but not listed here.

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

6 authors.

Alexander CaudarellaBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada.
Huiru DongBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada.
M J MilloyBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada; Department of Medicine, University of British Columbia, Vancouver, Canada.
Thomas KerrBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada; Department of Medicine, University of British Columbia, Vancouver, Canada.
Evan WoodBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada; Department of Medicine, University of British Columbia, Vancouver, Canada. Electronic address: uhri-ew@cfenet.ubc.ca.
Kanna HayashiBritish Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, Canada; Department of Medicine, University of British Columbia, Vancouver, Canada.

Funding

Vancouver Drug Users Study: The Impacts of Evolving Drug Use Patterns on HIV/AIDSU01DA038886 · NIDA · UNIVERSITY OF BRITISH COLUMBIA · PI DEBECK, KORA, HAYASHI, KANNA · 2015 to 2024
$12.1M
SYRINGE ACCESS AND RISK FACTORS ON HIV TRANSMISSIONR01DA011591 · NIDA · UNIVERSITY OF BRITISH COLUMBIA · PI KERR, THOMAS · 1998 to 2014
$5.9M
Impacts of universal access to HIV/AIDS care among HIV+ injection drug usersR01DA021525 · NIDA · UNIVERSITY OF BRITISH COLUMBIA · PI MILLOY, M-J · 2007 to 2016
$5.8M
Mentoring the next generation of addiction clinician scientists while responding to the opioid epidemicR25DA037756 · NIDA · UNIVERSITY OF BRITISH COLUMBIA · PI FAIRBAIRN, NADIA · 2014 to 2023
$3.6M
NIDA NIH HHS R01 DA011591NIDA NIH HHS R01 DA021525NIDA NIH HHS R01DA021525NIDA NIH HHS R25 DA037756NIDA NIH HHS U01 DA038886NIDA NIH HHS U01DA038886
6 · The paper itself

Abstract

objectivesTo examine the relationship between non-fatal overdose and risk of subsequent fatal overdose.

methodsWe assessed risk factors for overdose death among two prospective cohorts of persons who inject drugs (PWID) in Vancouver, Canada. Extended Cox regression was used to examine if reports of non-fatal overdose were associated with the time to fatal overdose while adjusting for other behavioral, social and structural confounders.

resultsBetween May, 1996 and December, 2011, 2317 individuals were followed for a median of 60.8 months. In total, 134 fatal overdose deaths were identified for an incidence density of 8.94 (95% confidence interval [CI]: 7.55-10.59) deaths per 1000 person-years. During the study period there were 1795 reports of non-fatal overdose. In a multivariate model, recent non-fatal overdose was independently associated with the time to overdose mortality (adjusted hazard ratio [AHR]=1.95; 95% CI: 1.17-3.27). As well, there was a dose response effect of increasing cumulative reports of non-fatal overdose on subsequent fatal overdose.

conclusionReports of recent non-fatal overdose were independently associated with subsequent overdose mortality in a dose-response relationship. These findings suggest that individuals reporting recent non-fatal overdose should be engaged with intensive overdose prevention interventions.

Indexed as

AdultAgedCanadaDrug OverdoseFemaleHumansIncidenceMaleMiddle AgedProspective StudiesRisk FactorsSubstance Abuse, IntravenousInjection drug useMortalityNon-fatal overdoseVancouver

Identifiers

PMID26993373
PMCPMC4833586

What OpenQuestion holds

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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.