Evidence map›Paper›PMID 40698403›Full record

Trial reportSubstance use & addiction journal2026

The Association of Perceived Risk for Opioid Overdose and Subsequent Overdose Among a Cohort of Opioid Overdose Survivors Who Use Nonprescribed Opioids.

Yi-Shin Grace Chang, Vanessa M McMahan, Tim Matheson, Xochitl Luna Marti, Mackenzie Robinson, Andrew Rolles, Sarah Kosakowski, Glenn-Milo Santos, Alexander Y Walley, Phillip O Coffin

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Substance use & addiction journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

10 authors.

Yi-Shin Grace ChangSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.ORCID 0009-0008-3163-0343
Vanessa M McMahanSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.
Tim MathesonSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.
Xochitl Luna MartiSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.
Mackenzie RobinsonSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.
Andrew RollesGrayken Center for Addiction and Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA.
Sarah KosakowskiGrayken Center for Addiction and Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA.
Glenn-Milo SantosUniversity of California, San Francisco, CA, USA.
Alexander Y WalleyGrayken Center for Addiction and Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA.
Phillip O CoffinSan Francisco Department of Public Health, Center on Substance Use and Health, San Francisco, CA, USA.

Funding

Repeated-dose behavioral intervention to reduce opioid overdose: a two-site randomized-controlled efficacy trialR01DA045690 · NIDA · PUBLIC HEALTH FOUNDATION ENTERPRISES · PI COFFIN, PHILLIP O · 2018 to 2022
$4.0M
Midcareer K24 Award for Mentoring and Patient-Oriented ResearchK24DA042720 · NIDA · SAN FRANCISCO DEPARTMENT OF PUBLIC HEALTH · PI PHILLIP O COFFIN · 2016 to 2026
$1.6M
NIDA NIH HHS K24 DA042720NIDA NIH HHS R01 DA045690
6 · The paper itself

Abstract

backgroundFatal opioid overdoses in the United States have rapidly increased since 1999. While several risk factors for overdose are known, the association of overdose risk perception with subsequent overdose is not well understood.

methodsWe used data from a randomized trial of a counseling intervention to reduce opioid overdose among overdose survivors who use nonprescribed opioids. Participants were followed up for 16 months with visits every 4 months. At study visits participants were asked how likely they were to overdose in the next 4 months (risk perception) and whether they had overdosed since their last visit. Responses of "extremely likely" or "likely" were considered "higher risk perception," and those of "neutral," "unlikely," and "extremely unlikely" were considered "lower risk perception." We conducted an adjusted generalized estimating equation among participants in the control group to examine the association of higher versus lower risk perception and subsequent overdose. We adjusted for visit, recent overdose, and sociodemographic characteristics that were selected

resultsAmong 135 control participants, median age was 42 years (interquartile range: 34-49) and over half were male (59%). Higher risk perception was associated with 2.65 times the adjusted odds of having a subsequent overdose compared with lower risk perception (95% confidence interval: 1.35-5.23,

conclusionsIncorporating an assessment of risk perception into opioid overdose prevention efforts may help prioritize prevention efforts.

Indexed as

Analgesics, OpioidDrug OverdoseOpiate OverdoseOpioid-Related DisordersSurvivorsAdultFemaleHumansMaleMiddle AgedRisk FactorsAnalgesics, Opioidopioid overdoserisk perception

Identifiers

PMID40698403
PMCPMC13055411

What Socratic holds

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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 Socratic graph.