Evidence map›Paper›PMID 32645584›Full record

ArticleThe International journal on drug policy2020

Ranking evidence in substance use and addiction.

Hudson Reddon, Thomas Kerr, M-J Milloy

Abstract read
In one paragraph

Article in The International journal on drug policy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. THE GENDER SEGREGATION OF PRECARIOUS WORK CONTEXTS AMONG PEOPLE WHO USE DRUGS.International journal of mental health and addiction · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Observational
  7. Article
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

3 authors.

Hudson ReddonBritish Columbia Centre on Substance Use, 1045 Howe Street, Vancouver, BC V6Z 2A9, Canada; CIHR Canadian HIV Trials Network, 588-1081 Burrard Street, Vancouver, BC V6B 3E6, Canada.
Thomas KerrBritish Columbia Centre on Substance Use, 1045 Howe Street, Vancouver, BC V6Z 2A9, Canada; Department of Medicine, University of British Columbia, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada.
M-J MilloyBritish Columbia Centre on Substance Use, 1045 Howe Street, Vancouver, BC V6Z 2A9, Canada; Department of Medicine, University of British Columbia, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada. Electronic address: bccsu-mjm@bccsu.ubc.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
CIHRNIDA NIH HHS U01 DA021525
6 · The paper itself

Abstract

Evidence-based medicine has consistently prized the epistemological value of randomized-controlled trials (RCTs) owing to their methodological advantages over alternative designs such as observational studies. However, there are limitations to RCTs that hinder their ability to study chronic and dynamic conditions such as substance use and addiction. For these conditions, observational studies may provide superior evidence based on methodological and practical strengths. Assuming epistemic superiority of RCTs has led to an inappropriate devaluation of other study designs and the findings they support, including support for harm reduction services, especially needle exchange programs and supervised injection facilities. The value offered by observational studies should be reflected in evidence-based medicine by allowing more flexibility in evidence hierarchies that presume methodological superiority of RCTs. Despite the popularity of evidence ranking systems and hierarchies, nothing should replace critical appraisal of study methodology and examining the suitability of applying a given study design to a specific research question.

Indexed as

Research DesignSubstance-Related DisordersEvidence-Based MedicineHumansEvidence-based medicineEvidence hierarchyObservational studiesRandomized-controlled trialsSubstance use

Identifiers

PMID32645584
PMCPMC7669593

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.